CA2035706C - Snap closing panel holder - Google Patents
Snap closing panel holderInfo
- Publication number
- CA2035706C CA2035706C CA002035706A CA2035706A CA2035706C CA 2035706 C CA2035706 C CA 2035706C CA 002035706 A CA002035706 A CA 002035706A CA 2035706 A CA2035706 A CA 2035706A CA 2035706 C CA2035706 C CA 2035706C
- Authority
- CA
- Canada
- Prior art keywords
- panel
- longitudinal
- predetermined distance
- peripheral edge
- panels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F15/00—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
- G09F15/0006—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like planar structures comprising one or more panels
- G09F15/0018—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like planar structures comprising one or more panels panel clamping or fastening means
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
- G09F7/18—Means for attaching signs, plates, panels, or boards to a supporting structure
- G09F2007/1856—Means for attaching signs, plates, panels, or boards to a supporting structure characterised by the supporting structure
- G09F2007/186—Means for attaching signs, plates, panels, or boards to a supporting structure characterised by the supporting structure suspended, e.g. secured to the ceiling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/20—Paper fastener
- Y10T24/202—Resiliently biased
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/44—Clasp, clip, support-clamp, or required component thereof
- Y10T24/44291—Clasp, clip, support-clamp, or required component thereof including pivoted gripping member
- Y10T24/44368—Pivoted gripping member applies camming force
Abstract
An improved poster holder is disclosed which can be either wall mounted or suspended from a ceiling. The holder includes two longitudinal extruded panels each having a longitudinal C-shaped flange situated along one of the panel edges. One flange is inserted within the other one to form a longitudinal interlocking hinge connection. The panels are movable with respect to each other in the transverse direction about this hinge coupling between an open and a closed position. The flanges are dimensioned in such a way that rotation of the panels with respect to one another in the transverse direction results in one of the flanges being elastically deformed during the first part of the motion, with the resulting stored elastic energy being abruptly released during the second part of the panel motion, thereby giving rise to the holder snapping open or closed. The poster holder formed by the interlocked panels represents an improvement over the prior art by eliminating the need for separate elements for hinging the panels together and biasing the panels open and closed.
Description
20~706 FIELD OF THE lNv~7~ION
The present invention relates to an improved poster holder for mounting or hanging posters or other sheet material.
BACRGROUND OF THE lNv~llON
There are several types of poster holders in use which employ two panels adapted to fit around the borders of a poster or other article to be displayed. The panels are hinged together along one peripheral edge while compressing the poster between the opposite peripheral edge. One approach is to hinge the panels together through a third hinged connector such as in U.S. Patent No.
4,470,575, or alternatively the panels can be hinged together using a pivot pintle assembly as disclosed in Canadian Patent No. 1,236,692 and Patent No. 1,097,068. One drawback of these configurations is that they are difficult to adapt to hanging poster applications where the peripheral hinged edges would interfere with attempts to hang the holders, this is because the panels would not be able to swing to their fully open position.
Other designs employ panels with fixed slots designed to receive and hold the poster, such as is disclosed in Canadian Patent No. 1,041,762. A drawback to such designs is that they require special coupling techniques at the corners which reduces their versatility.
Those poster hangers employing metal components are also 2~7Q~
~,,.
less versatile than poster hangers made of all plastic due to increased production costs, increased weight and the need for special tools to cut the holders to non-standard sizes. Many types of poster holders also employ a distinct structural member for biasing the panels in the open or closed position which can also reduce the versatility of the holder.
SUMMARY OF THE lNV~Nl'ION
lo In the present invention, a panel holder has two longitudinal panels each having a longitudinal C-shaped flange situated along a peripheral edge of the panel. One of the flanges is slidingly received by the other to form a longitudinal hinge coupling. The panels are movable with respect to each other in the transverse direction and the flanges are flexible and dimensioned so that the panels snap between an open and closed position.
According to one aspect of the invention there is provided a panel holder comprising a first longitudinal panel having a first planar portion and a first longitudinal C-shaped flange located along a first peripheral edge thereof. The C-shaped flange includes an outer wall with an inturned tongue attached to the outer wall which is disposed toward and is spaced from the first planar portion. The outer wall is spaced from the first planar portion a first predetermined distance. A second longitudinal panel having a second planar portion is _ 2 ~0357 0~
- provided which has a second longitll~;n~l C-shaped flange located along a first peripheral edge thereof and wherein the second C-shaped flange includes an inner wall portion with an outer surface, an upper wall attached thereto and a peripheral lip attached to the upper wall. The peripheral lip has an outer surface which is spaced from the outer surface of the inner wall portion a second predetermined distance and the peripheral lip extends transversely from the upper wall a third predetermined distance.
The second flange is slidably received within the first flange and the first predetermined distance is slightly smaller than the second predetermined distance but greater than the third predetermined distance. One of the flanges is resilient such that transverse rotation of one panel with respect to the other panel causes the panels to snap between an open and a closed position.
According to another aspect of the invention, there is provided a panel holder comprising a first extruded plastic, longitll~n~l panel provided with a first planar portion and a first longitll~;n~l, C-shaped flange located along a first peripheral thereof. The C-shaped flange includes an outer wall and an inturned tongue attached to the outer wall which is disposed toward and spaced from the first planar portion. The outer wall is spaced from the first planar portion a first predetermined distance. A
second, extruded plastic, longitll~; nal panel is provided with a second planar portion and a second longitll~; n~l C-~ .~
~3S7 ~ ~
'~ shaped flange located along a first peripheral edgethereof. The second C-shaped flange includes an inner wall portion having an outer surface, an upper wall attached to the inner wall portion, and a peripheral lip attached to the upper wall and having an outer surface. The outer surface of the peripheral lip is spaced from the outer surface of inner wall portion a second predeterm;ne~
distance and the peripheral lip extends transversely from the upper wall a third predetermined distance. The second panel is provided with at least one resilient, inwardly disposed longitll~; n~l rib extending along a second peripheral edge thereof. A third extruded plastic, longitll~;n~l panel is attached to the first panel along the first peripheral edge but is located on the opposite side of the panel to the C-shaped flange. The third panel has a second peripheral edge spaced from the first peripheral edge, the third panel being spaced from the first planar portion of the first panel. The second longit~l~;n~l peripheral edges of the first and third panels are spaced apart to form a receiving mouth for a poster holder support means. The second flange is slidably received within the first flange. The first predetermined distance is slightly smaller than the second predetermined distance and the third predetermined distance is less than the first predetermined distance. One of the flanges is resilient such that transverse rotation of one panel with respect to the other panel causes the panels to snap between an open and a closed position.
~ ~ 3 ~ 7 Q ~
- In yet another aspect of the invention there is provided a panel holder comprising an extruded plastic, longitn~;n~l member having a first panel having an inwardly projecting longitll~; n~ 1 rib having a transverse planar portion. A first longitll~;n~l C-shaped flange is located along a first peripheral edge thereof, the first C-shaped flange having an outer wall terminating in an inturned tongue disposed toward and spaced from the rib planar portion a first predetermined distance. A second longitl~;n~l, extruded plastic panel is provided with a second inwardly arcuate panel portion and a second longitll~;n~l C-shaped flange located along a first peripheral edge thereof. The second C-shaped flange includes an inner wall portion with an outer surface, an upper wall attached to said inner wall portion and a peripheral lip attached to the upper wall and having an outer surface. The outer surface of the peripheral lip is spaced from the outer surface of inner wall portion a second predetermined distance. The peripheral lip extends transversely from the upper wall a third predetermined distance. The second flange is slidingly received within the first flange and the first predetermined distance is slightly smaller than the second predetermined distance.
the first flange is resilient such that transverse rotation of one panel with respect to the other panel causes the panels to snap between an open and a closed position.
The first and second panels are each provided with resilient co-extruded and inwardly extending longitll~; n~l ~~ ribs, spaced from the first peripheral edges of each panel.
When the panels are in the closed position the ribs are in registration and engaged for gripping a poster therebetween.
According to a further aspect of the invention, a - panel holder comprises a first elongate panel provided with a first planar portion and a longitn~i n~l generally C-shaped flange located along a first peripheral edge thereof; a second elongate panel having a main portion with at least one longitll~; n~l rib member formed therein and located near a peripheral edge of said second panel spaced from said C-shaped flange, said at least one rib member being located on a side of said second panel facing said first player portion when said second panel is in a closed, panel gripping position and being made of a softer, more resilient material than the rest of the second panel; means for pivotably connecting said second elongate panel to said C-shaped flange so that said second panel can be pivoted from said closed position to an open position; and means for releasably holding said second panel in said closed position.
According to still another aspect of the invention, a panel holder comprises an elongate first member provided with a first panel having an inwardly projecting longitl~;n~l rib with a transverse planar portion, a first longitn~;n~l, generally C-shaped flange located along a first peripheral edge thereof and having an inturned tongue extending towards and spaced from said rib planar portion;
~ ~ 3 5 ~
~- an elongate second panel provided with a second panel portion and a second longit~ n~l C-shaped flange located along a first peripheral edge thereof, the second flange being slidably received within the first flange and said second panel being pivotable relative to said first member between an open position and a closed, panel-gripping position; and at least one soft, co-extruded longitlld;n~l rib formed on at least one of said first and second panels and located along a peripheral edge thereof spaced from said C-shaped flanges, said at least one rib member being located on a side of its respective panel facing the other of said panels in the closed position of the second panel and being made of a softer, more resilient material than its respective panel.
According to yet another aspect of the invention, a panel holder comprises a first elongate member having a first elongate panel portion with first and second longit~l~;n~l peripheral edges, a second elongate member having a second panel portion and pivotable with respect to said first member, means for pivotably connecting said second member to said first member along said first peripheral edge so that the two elongate members can pivot between an open position and a closed, panel-gripping position, and two soft co-extruded longitll~;n~l ribs formed on said second panel portion and located adjacent a peripheral edge thereof spaced from said first peripheral edge, said two ribs being located on a side of said second panel portion facing said first panel portion in said closed position, and being made of a - 6a -~ softer, more resilient material than the second elongate member. The ribs are substantially straight when viewed in transverse cross-section and project inwardly towards the first panel portion.
Preferred embodiments of the invention will now be described by way of example with reference to the accompanying drawings, in which:
Figure 1 is a perspective view of a preferred embodiment of a poster holder according to the present invention as shown in the closed position;
Figure 2 is a cross sectional view of a C-shaped flange portion of the first panel of the preferred embodiment shown in Figure 1;
Figure 3 illustrates three sectional views taken along lines 3-3 of Figure 1 showing the panel holder in 3a-the fully open position, 3b- a partially closed position, and 3c- the fully closed position;
Figure 4 illustrates two sectional views of an alternative embodiment of a poster holder of the present invention in 4a- the fully open position and 4b- the fully closed position;
Figure 5 is a perspective view of an alternative embodiment of a poster holder according to a present invention including a gripover frame;
Figure 6 is a sectional view taken along the line 6-6 of Figure 5 showing the poster holder 5a- in a fully open position, 5b- in a partially closed position, and 5c-- 6b --~3 2~3~
~"".
in a fully closed position;
Figure 7 is a perspective view of another embodiment of a poster holder according to the present invention including poster holder hangers;
Figure 8 is a sectional side view taken along the lines 8-8 of Figure 7 showing the poster holder 8a- in the fully open position, 8b- in a partially closed position, and 8c- in the fully closed position;
Figure 9 illustrates different poster hanging units for use in conjunction with the poster holder of Figure 8;
and Figures 10a and 10b illustrates two sectional side views partly broken away of a panel holder illustrated in Figure 4 showing the different dimensions to give the desired operation of the poster holder.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to Figures 1, 2 and 3, the structure and operation of a preferred embodiment of a panel holder of the subject invention will be described. A panel holder 10 is fabricated from an extruded plastic material and includes a first panel 12 having a first peripheral edge 14, a second peripheral edge 16 and a planar portion 18.
Panel 12 is provided with a longitudinal C-shaped flange 20 extending substantially along the full length of edge 14.
The perimeter of flange 20 is formed by an upper flange wall 22 connected to an outer flange wall 24 which then 3 ~
'~ terminates in an inwardly projecting tongue 26. The enclosure formed by flange 20 and that portion of planar portion 18 adjacent to wall 22 and edge 14 defines a longitudinal chamber 28. Walls 22, 24 and tongue 26 are preferably integrally formed with panel 12, being extruded as one piece during fabrication. The end of tongue 26 is spaced apart from planar portion 18 thereby defining a longitllA; n~l cleft 30 as illustrated in Figure 2.
A second extruded panel 34 includes a first peripheral edge 36 and a second peripheral edge 38. Panel 34 is provided with a longitllA; n~l C-shaped flange 40 extending substantially along the full length of edge 36.
The perimeter of flange 40 is formed by an inner wall 42, an outer surface 44 and a lip 46 and encloses a groove 48.
Panel 34 is provided with a pair of longitllA;n~l ribs 50 integrally formed therewith and situated along peripheral edge 38. The ribs are substantially sraight when they are viewed in transverse cross-section and they project inwardly towards the first panel portion 12. The second panel 34 extends in a plane arranged at a small acute angle to the first panel 12. The ribs 50 extend inwardly from the second panel 34 at a substantial angle thereto.
Panel holder 10 is assembled by collinearly aligning tongue 26 with groove 48 as shown in Figure 3a and sliding on panel into the other from an open end. When fully assembled, flanges 20 and 40 form a longitllA;n~l interlocking hinge connection about which panels 12 and 34 are movable in the transverse direction. Figure 3a also represents a cross sectional view of poster holder 10 assembled and in the fully open position wherein tongue 26 and groove 48 form a longitllA; n~l tongue-and-groove joint.
In one aspect of the invention this tongue-and-groove joint ~.~
203~06 acts to lock panel 34 in the open position. In this open position a receiving mouth 52 is formed between panels 12 and 34 for receiving a poster or 54 therebetween. The dimensions of flanges 20 and 40 are chosen to ensure that panels 12 and 34 can be readily and easily assembled as will be discussed below.
Panel 54 could be any sheet material, flexible or stiff. For the purposes of this specification, the terms poster and panel as used in reference to panel 54 are used interchangeably and are intended to include any sheet material such as posters, pictures, plastic, paper or cloth sheet material, or the like.
In operation, poster 54 is inserted into receiving mouth 52 and holder 10 closed by rotating panel 34 with respect to and inwardly towards panel 12. The diagonal outer dimension of flange 40 is made greater than the inner width of flange 20 with the result that as panel 34 is rotated flange 40 displaces wall 24 outwardly from planar portion 18. Figure 3b shows poster holder 10 in the partially closed position corresponding to the maximum outward displacement of wall 24 relative to planar portion 18. The work done to initially rotate panel 34 towards portion 18 is stored as elastic potential energy in the flexible material making up walls 22 and 24, and once the point of maximum displacement is passed this potential energy is abruptly released thereby snapping panel 34 up against portion 18 in the closed position, see Figure 3c.
~, _ 203~70~
~._ Ribs 50, which are preferably made of a softer more resilient material than the other components, exert an inward frictional force which acts to retard any downward movement of poster 54.
Panel or poster holder 10 is particularly suitable for mounting a poster to be displayed on one side only. For standard rectangular posters four holders would have their corners mitred and the holders mounted on a backing panel, using for example two sided tape applied to the outer surface of panel 12 for adhesive bonding to the backing panel. The backing panel could then be adapted to be wall mounted in one of several ways, for example using hooks or double sided tape.
Poster holder 10 is opened by gripping panel 34 along peripheral edge 38 and prying it apart from panel 12.
The reverse of the closing procedure described above occurs wherein once panel 34 has been rotated past the point corresponding to the maximum outward displacement of wall 24, the latter snaps back toward portion 18 thereby rotating panel 34 to the open position. Poster 54 can then be removed and replaced as desired.
Figures 4a and 4b illustrate another alternative embodiment of the panel holder of the subject invention wherein a panel holder 60 comprises two panel holders 10 as illustrated in Figure 1 integrally ~oined along a common wall 62. Such a holder would be useful for coupling multiple wall mounted posters or panels side by side or ~03~0~
,_ stacked one on top of the other as will be discussed below.
Referring to Figures 5 and 6, another embodiment of a panel holder is shown generally at 70. Poster holder 70 is similar to poster holder 10 shown in Figure 1 but further comprises a gripover panel 72 for mounting holder 70 around the perimeter of a mounting hardboard 74 (see Figure 6a). Gripover panel 72 includes a first peripheral edge 76 and a second peripheral edge 78. Panels 12' and 72 are joined along their respective first peripheral edges 76 and 14', preferably being co-extruded at the time of fabrication.
Gripover panel 72 has an inwardly arcuate shape and is provided with a reinforced longitudinal corner section 80 situated along the inner portion of peripheral edge 76 to strengthen the connection of gripover panel 72 to panel 12'. Reinforced section 80 is desirable as section 80 will be a region of maximum stress when holder 70 is being placed on or being removed from mounting hardboard 74.
Gripover panel 72 is provided with a slot 82 situated between section 80 and peripheral edge 14' for receiving the top edge 83 of board 74. Peripheral edges 14' and 76 of panels 12' and 72 respectively forms a receiving mouth 85 (see Figure 6b) for board 74. Panel 72 is resilient such that holder 70 grips board 74 when mounted thereon.
The assembly and operation of poster holder 70 is identical to that disclosed for poster holder 10 illustrated in Figure 1 and 3. Figures 6a to 6c show holder 20?~0 70 in the open, partially closed and closed positions respectively. It will be understood that the full perimeter of a rectangular poster can be secured by poster holder 70 by mitring the corners of the latter. Alternatively, the corners may be cut to any angle depending on the geometric shape of the material to be retained by holder 70.
Referring now to Figures 7, 8 and 9, yet another embodiment of the poster holder is shown at 110 and includes an extruded plastic, longitudinal member 100 having an arcuately shaped first panel 112 having a first peripheral edge 114 and a second peripheral edge 116. Panel 112 is provided with a generally C-shaped longitudinal flange 118 extending along peripheral edge 114. Flange 118 is formed with an upwardly opening longitudinal channel 132 joined to an outer wall 122 which terminates in an inwardly projecting tongue 124. Panel 112 is also provided with an inwardly projecting longitudinal planar rib 126 having a transverse planar portion 127 positioned adjacent to and generally parallel to outer wall 122. Flange 118 and rib 126 enclose a longitudinal chamber 130. Longitudinal cylindrical chamber 132 extends substantially along the full length of panel 112.
Holder 110 is provided with a plurality of poster hanger units 134 adapted to be inserted into chamber 132 from the ends. Panel 112 is provided with a pair of longitudinal, resiliently soft arcuate ribs 136 spaced from first longitudinal peripheral edge 114 and situated along 203~7'0~' ",, the inner portion of peripheral edge 116. Other embodiments of hanger unit 134 are illustrated in Figure 9 and include an adapter hook 133 which is insertable into chamber 132 is suitable for gripping "T" bar ceiling rails used to support ceiling tiles, (see Figures 9a and 9b). Another adapter hook shown in Figure 9c at 135 is also insertable into chamber 132 and may be used for suspending holder 110 by hooks or string from a ceiling.
A second inwardly arcuately shaped panel 138 comprises a first peripheral edge 140, a central panel portion 141 and a second peripheral edge 142. Panel 138 is provided with a generally C-shaped flange 144 extending along substantially the full length of edge 140. The perimeter of flange 144 includes an inner wall 146 connected to an upper wall 148 which in turn terminates in a peripheral lip 150. Flange 144 encloses a longitudinal groove 152 therein which extends along the length of panel 138. Panel 138 is provided with a pair of longitudinal, parallel, resiliently soft arcuate ribs 154 spaced from first longitudinal peripheral edge 140 and situated along peripheral edge 142 and adapted to be in registration and engaged with ribs 136 when holder 110 is in the closed position, (see Figure 8c). In the closed position, ribs 136, 154 engage and retain a poster 128 or other sheet material therebetween.
The operation of poster holder 110 is essentially identical to that of poster holder 10 illustrated in Figure 2~357~
~,i 1 with the following differences. Ribs 136 and 154, being fabricated of a soft and resilient material, exert an inward frictional force which resists the downward motion of poster 128 when holder 110 is fully closed.
In one application it may be desirable to mount several posters side by side or one stacked longitudinally on top of one another. To do this, poster holder 110 illustrated in Figure 7 may be utilized along the top edge of the poster while poster holder 60 illustrated in Figure 4 may be employed around the remaining perimeter of the poster. This is particularly suitable for poster combinations requiring multiple posters wherein one poster is anticipated to be present for a longer period of time while the associated posters must be changed periodically.
In another application poster holder 110 may also be used along a bottom edge of a poster which has been hung from a ceiling using a holder 110 along the upper edge thereof. In this particular use, panel holder 110 is used upside down along the bottom edge of a poster with a metal bar inserted into chamber 132 to act as a weight.
Referring again to Figures 1 and 3 it will be appreciated that one notable aspect of the subject invention relates to the abrupt release of elastic potential energy stored in walls 22 and 24 which imparts a substantial impulse to panel 34 which will result in it "snapping" up against planar portion 18 thus compressing poster 54 therebetween. It will also be understood that the 7 Q ~
- magnitude of this elastic potential energy created and hence the quality of the snapping action will be determined in part by the elastic properties of walls 22 and 24 which in turn can be tailored by co-extruding panel 12 and flange 20 using materials with optimized elastic properties for walls 22 and 24 if so desired.
In another aspect of the invention, interlocked panels 12 and 34 cooperate to produce a cam actuated to position clamp. The cam actuated clamping action occurs as panel 34 is rotated inwards towards panel 12 wherein the rotational motion of flange 40 confined to chamber 28 acts to displace wall 24 outwards. Thus, flange 40 performs the role of the cam while the longitll~in~l hinge connection corresponds to the cam axis and wall 24 corresponds to the cam follower.
The work done to displace wall 26 from its equilibrium position is converted into and stored as elastic potential energy in walls 22 and 24 which in turn is released as panel 34 passes the point corresponding to the maximum outward displacement of wall 24 and is utilized to create a compressive force biasing panel 34 against panel 12 in the fully closed position.
The formation of the tongue-and-groove joint in the open position and the snapping action during opening and closing are predicated on the two flanges having the appropriate dimensions. These ~;m~nsions are discussed with reference to Figures 5, lOa and lOb wherein a panel 160 has a first peripheral edge 162 and is provided with a longit~ n~l C-shaped flange 164 attached along edge 162.
Flange 164 is resilient and includes an upper wall 166 '~-?~
~, "~
~ ~ 3 ~
'~I~ attached to an outer wall 168 which in turn terminates in an inwardly pointing tongue 170. Flange 164 and that portion of panel 160 adjacent to flange 164 enclose a longitl]~; n~l chamber 172. Cha-m-ber 172 has an internal equilibrium cross sectional ~;m~n~ion of tl which is a first predetermined distance that wall 168 is spaced from planar portion 161.
A second panel 174 is provided having a planar portion 175 and a first peripheral edge 176 and includes a longit~ n~l C-shaped ~lange 178 attached along edge 176.
Flange 178 comprises an inner wall portion 180 having an outer surface and joined to an upper wall 182 which terminates in a peripheral lip 184. The lip 184 also has an outer surface. Flange 178 has an equilibrium cross sectional ~;m~n~ion of t2, which is a second predetermined distance extending from the outer surface of the inner wall portion to the outer surface of the peripheral lip 184, and is greater than tl. The ~;m~n~ion t2 is chosen to be slightly greater than tl so that wall 168 will be displaced outwardly a small distance from its equilibrium ~;mension when panel 174 is closed. This outward displacement of flexible wall 168 acts to apply a compressive force thereby resiliently biasing panel 174 in the closed position, see Figure 9b. Lip 184 extends transversely from upper wall portion 182 towards planar portion 175 a third predetermined distance t3, wherein t3 is less than tl so that in the open position panels 160 and 174 can be assembled to form a poster holder as described above.
Flange 178 has an outer diagonal ~;~ension t4 which ~3~70~
=_ is greater than tl so that during opening and closing of the holder, flange 178 translationally displaces wall 168 outward a distance sufficient to build up the necessary elastic potential energy required to produce the snapping action when wall 168 passes the point of maximum outward displacement. Flange 178 encloses a groove 190 which has an inner width t5 while the width of tongue 170 is t6, wherein t6 is less than or approximately equal to dimension t5 as will be discussed below. The dimension t7 is the distance between the end of lip 184 and peripheral edge 176.
The distance that panel 174 swings open is determined by the three dimensions t5, t6 and t7. In one limit, for t5 = t6 = t7, panel 174 will swing open a fixed distance and remain locked relatively firmly in the open position since tongue 170 and groove 190 form a tight tongue-and-groove joint. Poster holder 110 illustrated in Figures 7 and 8 closely approaches this limit. This particular situation is preferable for two reasons; first the frictional forces arising between the two flanges due to their snug fit will ensure little or no lateral movement between the two panels whereas for t6 < t5, a loose fit will result and hence the panels may slide apart if the assembled poster holder is inclined from tpe horizontal.
Secondly, the gap which forms the receiving mouth between flange 178 and panel 160 in the open position is fixed since tongue 170 cannot slide in groove 190 in the locked open position. Dimension t3 is also chosen to ensure that 57~
~,., tongue 170 remains firmly interlaced with groove 190 in the open position thereby forming a tight tongue-and-groove joint.
The two panels are preferably extruded from a rigidly resilient plastic material such as polyvinyl chloride (PVC). The ribs can be fabricated from either the same PVC material or alternatively they can be made from a softer more resilient grade of PVC having a higher coefficient of friction. Alternatively the panels and associated ribs could be fabricated from an extruded metal having the appropriate elastic properties, an example being aluminum.
While the present invention has been described and illustrated with respect to the preferred embodiments, it will be appreciated that numerous variations of these embodiments may be made without departing from the scope of the invention, which is defined in the appended claims.
The present invention relates to an improved poster holder for mounting or hanging posters or other sheet material.
BACRGROUND OF THE lNv~llON
There are several types of poster holders in use which employ two panels adapted to fit around the borders of a poster or other article to be displayed. The panels are hinged together along one peripheral edge while compressing the poster between the opposite peripheral edge. One approach is to hinge the panels together through a third hinged connector such as in U.S. Patent No.
4,470,575, or alternatively the panels can be hinged together using a pivot pintle assembly as disclosed in Canadian Patent No. 1,236,692 and Patent No. 1,097,068. One drawback of these configurations is that they are difficult to adapt to hanging poster applications where the peripheral hinged edges would interfere with attempts to hang the holders, this is because the panels would not be able to swing to their fully open position.
Other designs employ panels with fixed slots designed to receive and hold the poster, such as is disclosed in Canadian Patent No. 1,041,762. A drawback to such designs is that they require special coupling techniques at the corners which reduces their versatility.
Those poster hangers employing metal components are also 2~7Q~
~,,.
less versatile than poster hangers made of all plastic due to increased production costs, increased weight and the need for special tools to cut the holders to non-standard sizes. Many types of poster holders also employ a distinct structural member for biasing the panels in the open or closed position which can also reduce the versatility of the holder.
SUMMARY OF THE lNV~Nl'ION
lo In the present invention, a panel holder has two longitudinal panels each having a longitudinal C-shaped flange situated along a peripheral edge of the panel. One of the flanges is slidingly received by the other to form a longitudinal hinge coupling. The panels are movable with respect to each other in the transverse direction and the flanges are flexible and dimensioned so that the panels snap between an open and closed position.
According to one aspect of the invention there is provided a panel holder comprising a first longitudinal panel having a first planar portion and a first longitudinal C-shaped flange located along a first peripheral edge thereof. The C-shaped flange includes an outer wall with an inturned tongue attached to the outer wall which is disposed toward and is spaced from the first planar portion. The outer wall is spaced from the first planar portion a first predetermined distance. A second longitudinal panel having a second planar portion is _ 2 ~0357 0~
- provided which has a second longitll~;n~l C-shaped flange located along a first peripheral edge thereof and wherein the second C-shaped flange includes an inner wall portion with an outer surface, an upper wall attached thereto and a peripheral lip attached to the upper wall. The peripheral lip has an outer surface which is spaced from the outer surface of the inner wall portion a second predetermined distance and the peripheral lip extends transversely from the upper wall a third predetermined distance.
The second flange is slidably received within the first flange and the first predetermined distance is slightly smaller than the second predetermined distance but greater than the third predetermined distance. One of the flanges is resilient such that transverse rotation of one panel with respect to the other panel causes the panels to snap between an open and a closed position.
According to another aspect of the invention, there is provided a panel holder comprising a first extruded plastic, longitll~n~l panel provided with a first planar portion and a first longitll~;n~l, C-shaped flange located along a first peripheral thereof. The C-shaped flange includes an outer wall and an inturned tongue attached to the outer wall which is disposed toward and spaced from the first planar portion. The outer wall is spaced from the first planar portion a first predetermined distance. A
second, extruded plastic, longitll~; nal panel is provided with a second planar portion and a second longitll~; n~l C-~ .~
~3S7 ~ ~
'~ shaped flange located along a first peripheral edgethereof. The second C-shaped flange includes an inner wall portion having an outer surface, an upper wall attached to the inner wall portion, and a peripheral lip attached to the upper wall and having an outer surface. The outer surface of the peripheral lip is spaced from the outer surface of inner wall portion a second predeterm;ne~
distance and the peripheral lip extends transversely from the upper wall a third predetermined distance. The second panel is provided with at least one resilient, inwardly disposed longitll~; n~l rib extending along a second peripheral edge thereof. A third extruded plastic, longitll~;n~l panel is attached to the first panel along the first peripheral edge but is located on the opposite side of the panel to the C-shaped flange. The third panel has a second peripheral edge spaced from the first peripheral edge, the third panel being spaced from the first planar portion of the first panel. The second longit~l~;n~l peripheral edges of the first and third panels are spaced apart to form a receiving mouth for a poster holder support means. The second flange is slidably received within the first flange. The first predetermined distance is slightly smaller than the second predetermined distance and the third predetermined distance is less than the first predetermined distance. One of the flanges is resilient such that transverse rotation of one panel with respect to the other panel causes the panels to snap between an open and a closed position.
~ ~ 3 ~ 7 Q ~
- In yet another aspect of the invention there is provided a panel holder comprising an extruded plastic, longitn~;n~l member having a first panel having an inwardly projecting longitll~; n~ 1 rib having a transverse planar portion. A first longitll~;n~l C-shaped flange is located along a first peripheral edge thereof, the first C-shaped flange having an outer wall terminating in an inturned tongue disposed toward and spaced from the rib planar portion a first predetermined distance. A second longitl~;n~l, extruded plastic panel is provided with a second inwardly arcuate panel portion and a second longitll~;n~l C-shaped flange located along a first peripheral edge thereof. The second C-shaped flange includes an inner wall portion with an outer surface, an upper wall attached to said inner wall portion and a peripheral lip attached to the upper wall and having an outer surface. The outer surface of the peripheral lip is spaced from the outer surface of inner wall portion a second predetermined distance. The peripheral lip extends transversely from the upper wall a third predetermined distance. The second flange is slidingly received within the first flange and the first predetermined distance is slightly smaller than the second predetermined distance.
the first flange is resilient such that transverse rotation of one panel with respect to the other panel causes the panels to snap between an open and a closed position.
The first and second panels are each provided with resilient co-extruded and inwardly extending longitll~; n~l ~~ ribs, spaced from the first peripheral edges of each panel.
When the panels are in the closed position the ribs are in registration and engaged for gripping a poster therebetween.
According to a further aspect of the invention, a - panel holder comprises a first elongate panel provided with a first planar portion and a longitn~i n~l generally C-shaped flange located along a first peripheral edge thereof; a second elongate panel having a main portion with at least one longitll~; n~l rib member formed therein and located near a peripheral edge of said second panel spaced from said C-shaped flange, said at least one rib member being located on a side of said second panel facing said first player portion when said second panel is in a closed, panel gripping position and being made of a softer, more resilient material than the rest of the second panel; means for pivotably connecting said second elongate panel to said C-shaped flange so that said second panel can be pivoted from said closed position to an open position; and means for releasably holding said second panel in said closed position.
According to still another aspect of the invention, a panel holder comprises an elongate first member provided with a first panel having an inwardly projecting longitl~;n~l rib with a transverse planar portion, a first longitn~;n~l, generally C-shaped flange located along a first peripheral edge thereof and having an inturned tongue extending towards and spaced from said rib planar portion;
~ ~ 3 5 ~
~- an elongate second panel provided with a second panel portion and a second longit~ n~l C-shaped flange located along a first peripheral edge thereof, the second flange being slidably received within the first flange and said second panel being pivotable relative to said first member between an open position and a closed, panel-gripping position; and at least one soft, co-extruded longitlld;n~l rib formed on at least one of said first and second panels and located along a peripheral edge thereof spaced from said C-shaped flanges, said at least one rib member being located on a side of its respective panel facing the other of said panels in the closed position of the second panel and being made of a softer, more resilient material than its respective panel.
According to yet another aspect of the invention, a panel holder comprises a first elongate member having a first elongate panel portion with first and second longit~l~;n~l peripheral edges, a second elongate member having a second panel portion and pivotable with respect to said first member, means for pivotably connecting said second member to said first member along said first peripheral edge so that the two elongate members can pivot between an open position and a closed, panel-gripping position, and two soft co-extruded longitll~;n~l ribs formed on said second panel portion and located adjacent a peripheral edge thereof spaced from said first peripheral edge, said two ribs being located on a side of said second panel portion facing said first panel portion in said closed position, and being made of a - 6a -~ softer, more resilient material than the second elongate member. The ribs are substantially straight when viewed in transverse cross-section and project inwardly towards the first panel portion.
Preferred embodiments of the invention will now be described by way of example with reference to the accompanying drawings, in which:
Figure 1 is a perspective view of a preferred embodiment of a poster holder according to the present invention as shown in the closed position;
Figure 2 is a cross sectional view of a C-shaped flange portion of the first panel of the preferred embodiment shown in Figure 1;
Figure 3 illustrates three sectional views taken along lines 3-3 of Figure 1 showing the panel holder in 3a-the fully open position, 3b- a partially closed position, and 3c- the fully closed position;
Figure 4 illustrates two sectional views of an alternative embodiment of a poster holder of the present invention in 4a- the fully open position and 4b- the fully closed position;
Figure 5 is a perspective view of an alternative embodiment of a poster holder according to a present invention including a gripover frame;
Figure 6 is a sectional view taken along the line 6-6 of Figure 5 showing the poster holder 5a- in a fully open position, 5b- in a partially closed position, and 5c-- 6b --~3 2~3~
~"".
in a fully closed position;
Figure 7 is a perspective view of another embodiment of a poster holder according to the present invention including poster holder hangers;
Figure 8 is a sectional side view taken along the lines 8-8 of Figure 7 showing the poster holder 8a- in the fully open position, 8b- in a partially closed position, and 8c- in the fully closed position;
Figure 9 illustrates different poster hanging units for use in conjunction with the poster holder of Figure 8;
and Figures 10a and 10b illustrates two sectional side views partly broken away of a panel holder illustrated in Figure 4 showing the different dimensions to give the desired operation of the poster holder.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to Figures 1, 2 and 3, the structure and operation of a preferred embodiment of a panel holder of the subject invention will be described. A panel holder 10 is fabricated from an extruded plastic material and includes a first panel 12 having a first peripheral edge 14, a second peripheral edge 16 and a planar portion 18.
Panel 12 is provided with a longitudinal C-shaped flange 20 extending substantially along the full length of edge 14.
The perimeter of flange 20 is formed by an upper flange wall 22 connected to an outer flange wall 24 which then 3 ~
'~ terminates in an inwardly projecting tongue 26. The enclosure formed by flange 20 and that portion of planar portion 18 adjacent to wall 22 and edge 14 defines a longitudinal chamber 28. Walls 22, 24 and tongue 26 are preferably integrally formed with panel 12, being extruded as one piece during fabrication. The end of tongue 26 is spaced apart from planar portion 18 thereby defining a longitllA; n~l cleft 30 as illustrated in Figure 2.
A second extruded panel 34 includes a first peripheral edge 36 and a second peripheral edge 38. Panel 34 is provided with a longitllA; n~l C-shaped flange 40 extending substantially along the full length of edge 36.
The perimeter of flange 40 is formed by an inner wall 42, an outer surface 44 and a lip 46 and encloses a groove 48.
Panel 34 is provided with a pair of longitllA;n~l ribs 50 integrally formed therewith and situated along peripheral edge 38. The ribs are substantially sraight when they are viewed in transverse cross-section and they project inwardly towards the first panel portion 12. The second panel 34 extends in a plane arranged at a small acute angle to the first panel 12. The ribs 50 extend inwardly from the second panel 34 at a substantial angle thereto.
Panel holder 10 is assembled by collinearly aligning tongue 26 with groove 48 as shown in Figure 3a and sliding on panel into the other from an open end. When fully assembled, flanges 20 and 40 form a longitllA;n~l interlocking hinge connection about which panels 12 and 34 are movable in the transverse direction. Figure 3a also represents a cross sectional view of poster holder 10 assembled and in the fully open position wherein tongue 26 and groove 48 form a longitllA; n~l tongue-and-groove joint.
In one aspect of the invention this tongue-and-groove joint ~.~
203~06 acts to lock panel 34 in the open position. In this open position a receiving mouth 52 is formed between panels 12 and 34 for receiving a poster or 54 therebetween. The dimensions of flanges 20 and 40 are chosen to ensure that panels 12 and 34 can be readily and easily assembled as will be discussed below.
Panel 54 could be any sheet material, flexible or stiff. For the purposes of this specification, the terms poster and panel as used in reference to panel 54 are used interchangeably and are intended to include any sheet material such as posters, pictures, plastic, paper or cloth sheet material, or the like.
In operation, poster 54 is inserted into receiving mouth 52 and holder 10 closed by rotating panel 34 with respect to and inwardly towards panel 12. The diagonal outer dimension of flange 40 is made greater than the inner width of flange 20 with the result that as panel 34 is rotated flange 40 displaces wall 24 outwardly from planar portion 18. Figure 3b shows poster holder 10 in the partially closed position corresponding to the maximum outward displacement of wall 24 relative to planar portion 18. The work done to initially rotate panel 34 towards portion 18 is stored as elastic potential energy in the flexible material making up walls 22 and 24, and once the point of maximum displacement is passed this potential energy is abruptly released thereby snapping panel 34 up against portion 18 in the closed position, see Figure 3c.
~, _ 203~70~
~._ Ribs 50, which are preferably made of a softer more resilient material than the other components, exert an inward frictional force which acts to retard any downward movement of poster 54.
Panel or poster holder 10 is particularly suitable for mounting a poster to be displayed on one side only. For standard rectangular posters four holders would have their corners mitred and the holders mounted on a backing panel, using for example two sided tape applied to the outer surface of panel 12 for adhesive bonding to the backing panel. The backing panel could then be adapted to be wall mounted in one of several ways, for example using hooks or double sided tape.
Poster holder 10 is opened by gripping panel 34 along peripheral edge 38 and prying it apart from panel 12.
The reverse of the closing procedure described above occurs wherein once panel 34 has been rotated past the point corresponding to the maximum outward displacement of wall 24, the latter snaps back toward portion 18 thereby rotating panel 34 to the open position. Poster 54 can then be removed and replaced as desired.
Figures 4a and 4b illustrate another alternative embodiment of the panel holder of the subject invention wherein a panel holder 60 comprises two panel holders 10 as illustrated in Figure 1 integrally ~oined along a common wall 62. Such a holder would be useful for coupling multiple wall mounted posters or panels side by side or ~03~0~
,_ stacked one on top of the other as will be discussed below.
Referring to Figures 5 and 6, another embodiment of a panel holder is shown generally at 70. Poster holder 70 is similar to poster holder 10 shown in Figure 1 but further comprises a gripover panel 72 for mounting holder 70 around the perimeter of a mounting hardboard 74 (see Figure 6a). Gripover panel 72 includes a first peripheral edge 76 and a second peripheral edge 78. Panels 12' and 72 are joined along their respective first peripheral edges 76 and 14', preferably being co-extruded at the time of fabrication.
Gripover panel 72 has an inwardly arcuate shape and is provided with a reinforced longitudinal corner section 80 situated along the inner portion of peripheral edge 76 to strengthen the connection of gripover panel 72 to panel 12'. Reinforced section 80 is desirable as section 80 will be a region of maximum stress when holder 70 is being placed on or being removed from mounting hardboard 74.
Gripover panel 72 is provided with a slot 82 situated between section 80 and peripheral edge 14' for receiving the top edge 83 of board 74. Peripheral edges 14' and 76 of panels 12' and 72 respectively forms a receiving mouth 85 (see Figure 6b) for board 74. Panel 72 is resilient such that holder 70 grips board 74 when mounted thereon.
The assembly and operation of poster holder 70 is identical to that disclosed for poster holder 10 illustrated in Figure 1 and 3. Figures 6a to 6c show holder 20?~0 70 in the open, partially closed and closed positions respectively. It will be understood that the full perimeter of a rectangular poster can be secured by poster holder 70 by mitring the corners of the latter. Alternatively, the corners may be cut to any angle depending on the geometric shape of the material to be retained by holder 70.
Referring now to Figures 7, 8 and 9, yet another embodiment of the poster holder is shown at 110 and includes an extruded plastic, longitudinal member 100 having an arcuately shaped first panel 112 having a first peripheral edge 114 and a second peripheral edge 116. Panel 112 is provided with a generally C-shaped longitudinal flange 118 extending along peripheral edge 114. Flange 118 is formed with an upwardly opening longitudinal channel 132 joined to an outer wall 122 which terminates in an inwardly projecting tongue 124. Panel 112 is also provided with an inwardly projecting longitudinal planar rib 126 having a transverse planar portion 127 positioned adjacent to and generally parallel to outer wall 122. Flange 118 and rib 126 enclose a longitudinal chamber 130. Longitudinal cylindrical chamber 132 extends substantially along the full length of panel 112.
Holder 110 is provided with a plurality of poster hanger units 134 adapted to be inserted into chamber 132 from the ends. Panel 112 is provided with a pair of longitudinal, resiliently soft arcuate ribs 136 spaced from first longitudinal peripheral edge 114 and situated along 203~7'0~' ",, the inner portion of peripheral edge 116. Other embodiments of hanger unit 134 are illustrated in Figure 9 and include an adapter hook 133 which is insertable into chamber 132 is suitable for gripping "T" bar ceiling rails used to support ceiling tiles, (see Figures 9a and 9b). Another adapter hook shown in Figure 9c at 135 is also insertable into chamber 132 and may be used for suspending holder 110 by hooks or string from a ceiling.
A second inwardly arcuately shaped panel 138 comprises a first peripheral edge 140, a central panel portion 141 and a second peripheral edge 142. Panel 138 is provided with a generally C-shaped flange 144 extending along substantially the full length of edge 140. The perimeter of flange 144 includes an inner wall 146 connected to an upper wall 148 which in turn terminates in a peripheral lip 150. Flange 144 encloses a longitudinal groove 152 therein which extends along the length of panel 138. Panel 138 is provided with a pair of longitudinal, parallel, resiliently soft arcuate ribs 154 spaced from first longitudinal peripheral edge 140 and situated along peripheral edge 142 and adapted to be in registration and engaged with ribs 136 when holder 110 is in the closed position, (see Figure 8c). In the closed position, ribs 136, 154 engage and retain a poster 128 or other sheet material therebetween.
The operation of poster holder 110 is essentially identical to that of poster holder 10 illustrated in Figure 2~357~
~,i 1 with the following differences. Ribs 136 and 154, being fabricated of a soft and resilient material, exert an inward frictional force which resists the downward motion of poster 128 when holder 110 is fully closed.
In one application it may be desirable to mount several posters side by side or one stacked longitudinally on top of one another. To do this, poster holder 110 illustrated in Figure 7 may be utilized along the top edge of the poster while poster holder 60 illustrated in Figure 4 may be employed around the remaining perimeter of the poster. This is particularly suitable for poster combinations requiring multiple posters wherein one poster is anticipated to be present for a longer period of time while the associated posters must be changed periodically.
In another application poster holder 110 may also be used along a bottom edge of a poster which has been hung from a ceiling using a holder 110 along the upper edge thereof. In this particular use, panel holder 110 is used upside down along the bottom edge of a poster with a metal bar inserted into chamber 132 to act as a weight.
Referring again to Figures 1 and 3 it will be appreciated that one notable aspect of the subject invention relates to the abrupt release of elastic potential energy stored in walls 22 and 24 which imparts a substantial impulse to panel 34 which will result in it "snapping" up against planar portion 18 thus compressing poster 54 therebetween. It will also be understood that the 7 Q ~
- magnitude of this elastic potential energy created and hence the quality of the snapping action will be determined in part by the elastic properties of walls 22 and 24 which in turn can be tailored by co-extruding panel 12 and flange 20 using materials with optimized elastic properties for walls 22 and 24 if so desired.
In another aspect of the invention, interlocked panels 12 and 34 cooperate to produce a cam actuated to position clamp. The cam actuated clamping action occurs as panel 34 is rotated inwards towards panel 12 wherein the rotational motion of flange 40 confined to chamber 28 acts to displace wall 24 outwards. Thus, flange 40 performs the role of the cam while the longitll~in~l hinge connection corresponds to the cam axis and wall 24 corresponds to the cam follower.
The work done to displace wall 26 from its equilibrium position is converted into and stored as elastic potential energy in walls 22 and 24 which in turn is released as panel 34 passes the point corresponding to the maximum outward displacement of wall 24 and is utilized to create a compressive force biasing panel 34 against panel 12 in the fully closed position.
The formation of the tongue-and-groove joint in the open position and the snapping action during opening and closing are predicated on the two flanges having the appropriate dimensions. These ~;m~nsions are discussed with reference to Figures 5, lOa and lOb wherein a panel 160 has a first peripheral edge 162 and is provided with a longit~ n~l C-shaped flange 164 attached along edge 162.
Flange 164 is resilient and includes an upper wall 166 '~-?~
~, "~
~ ~ 3 ~
'~I~ attached to an outer wall 168 which in turn terminates in an inwardly pointing tongue 170. Flange 164 and that portion of panel 160 adjacent to flange 164 enclose a longitl]~; n~l chamber 172. Cha-m-ber 172 has an internal equilibrium cross sectional ~;m~n~ion of tl which is a first predetermined distance that wall 168 is spaced from planar portion 161.
A second panel 174 is provided having a planar portion 175 and a first peripheral edge 176 and includes a longit~ n~l C-shaped ~lange 178 attached along edge 176.
Flange 178 comprises an inner wall portion 180 having an outer surface and joined to an upper wall 182 which terminates in a peripheral lip 184. The lip 184 also has an outer surface. Flange 178 has an equilibrium cross sectional ~;m~n~ion of t2, which is a second predetermined distance extending from the outer surface of the inner wall portion to the outer surface of the peripheral lip 184, and is greater than tl. The ~;m~n~ion t2 is chosen to be slightly greater than tl so that wall 168 will be displaced outwardly a small distance from its equilibrium ~;mension when panel 174 is closed. This outward displacement of flexible wall 168 acts to apply a compressive force thereby resiliently biasing panel 174 in the closed position, see Figure 9b. Lip 184 extends transversely from upper wall portion 182 towards planar portion 175 a third predetermined distance t3, wherein t3 is less than tl so that in the open position panels 160 and 174 can be assembled to form a poster holder as described above.
Flange 178 has an outer diagonal ~;~ension t4 which ~3~70~
=_ is greater than tl so that during opening and closing of the holder, flange 178 translationally displaces wall 168 outward a distance sufficient to build up the necessary elastic potential energy required to produce the snapping action when wall 168 passes the point of maximum outward displacement. Flange 178 encloses a groove 190 which has an inner width t5 while the width of tongue 170 is t6, wherein t6 is less than or approximately equal to dimension t5 as will be discussed below. The dimension t7 is the distance between the end of lip 184 and peripheral edge 176.
The distance that panel 174 swings open is determined by the three dimensions t5, t6 and t7. In one limit, for t5 = t6 = t7, panel 174 will swing open a fixed distance and remain locked relatively firmly in the open position since tongue 170 and groove 190 form a tight tongue-and-groove joint. Poster holder 110 illustrated in Figures 7 and 8 closely approaches this limit. This particular situation is preferable for two reasons; first the frictional forces arising between the two flanges due to their snug fit will ensure little or no lateral movement between the two panels whereas for t6 < t5, a loose fit will result and hence the panels may slide apart if the assembled poster holder is inclined from tpe horizontal.
Secondly, the gap which forms the receiving mouth between flange 178 and panel 160 in the open position is fixed since tongue 170 cannot slide in groove 190 in the locked open position. Dimension t3 is also chosen to ensure that 57~
~,., tongue 170 remains firmly interlaced with groove 190 in the open position thereby forming a tight tongue-and-groove joint.
The two panels are preferably extruded from a rigidly resilient plastic material such as polyvinyl chloride (PVC). The ribs can be fabricated from either the same PVC material or alternatively they can be made from a softer more resilient grade of PVC having a higher coefficient of friction. Alternatively the panels and associated ribs could be fabricated from an extruded metal having the appropriate elastic properties, an example being aluminum.
While the present invention has been described and illustrated with respect to the preferred embodiments, it will be appreciated that numerous variations of these embodiments may be made without departing from the scope of the invention, which is defined in the appended claims.
Claims (34)
1. A panel holder, comprising:
a) a first longitudinal panel provided with a first planar portion and a first longitudinal, C-shaped flange located along a first peripheral edge thereof, wherein the C-shaped flange includes an outer wall and an inturned tongue attached to the outer wall and disposed toward and spaced from the first planar portion, and wherein the outer wall is spaced from the first planar portion a first predetermined distance;
b) a second longitudinal panel provided with a second planar portion and a second longitudinal C-shaped flange located along a first peripheral edge thereof, wherein the second C-shaped flange includes an inner wall portion with an outer surface, an upper wall attached thereto and a peripheral lip attached to the upper wall, wherein the peripheral lip has an outer surface which is spaced from said outer surface of the inner wall portion a second predetermined distance, and wherein the peripheral lip extends transversely from the upper wall a third predetermined distance; and c) the second flange being slidably received within the first flange, wherein the first predetermined distance is slightly smaller than the second predetermined distance and the third predetermined distance is less than the first predetermined distance, and wherein one of the flanges is resilient such that transverse rotation of one panel with respect to the other panel causes the panels to snap between an open and closed position.
a) a first longitudinal panel provided with a first planar portion and a first longitudinal, C-shaped flange located along a first peripheral edge thereof, wherein the C-shaped flange includes an outer wall and an inturned tongue attached to the outer wall and disposed toward and spaced from the first planar portion, and wherein the outer wall is spaced from the first planar portion a first predetermined distance;
b) a second longitudinal panel provided with a second planar portion and a second longitudinal C-shaped flange located along a first peripheral edge thereof, wherein the second C-shaped flange includes an inner wall portion with an outer surface, an upper wall attached thereto and a peripheral lip attached to the upper wall, wherein the peripheral lip has an outer surface which is spaced from said outer surface of the inner wall portion a second predetermined distance, and wherein the peripheral lip extends transversely from the upper wall a third predetermined distance; and c) the second flange being slidably received within the first flange, wherein the first predetermined distance is slightly smaller than the second predetermined distance and the third predetermined distance is less than the first predetermined distance, and wherein one of the flanges is resilient such that transverse rotation of one panel with respect to the other panel causes the panels to snap between an open and closed position.
2. A panel holder according to claim 1 wherein the first predetermined distance is greater than the third predetermined distance by a sufficient amount such that in the open position a gap is formed between the first planar portion and the second panel upper wall for receiving a poster therebetween.
3. A panel holder according to claim 1 wherein the first predetermined distance is less than the second predetermined distance by an amount such that in the closed position the first flange compresses the second flange thereby resiliently biasing the panels in the closed position.
4. A panel holder according to claim 1 wherein the first C-shaped flange is resilient such that it is elastically deformable during transverse rotation of the second panel with respect to the first panel for generating a force to snap the panels between an open and a closed position.
5. A panel holder according to claim 1 wherein the second panel is provided with at least one longitudinal inwardly disposed rib extending along a second peripheral edge thereof for compressing a poster between the at least one rib and the first planar portion of the first panel in the closed position.
6. A panel holder according to claim 1 wherein the two panels are extruded of a flexible material.
7. A panel holder according to claim 6 wherein the material is a flexible plastic.
8. A panel holder according to claim 6 wherein the material is a flexible metal.
9. A panel holder according to claim 5 wherein the at least one rib is co-extruded with the second panel and is made of a softer, more resilient material than the second panel.
10. A panel holder, comprising:
a) a first extruded plastic, longitudinal panel provided with a first planar portion and a first longitudinal, C-shaped flange located along a first peripheral edge thereof, wherein the C-shaped flange includes an outer wall and an inturned tongue attached to the outer wall and disposed toward and spaced from the first planar portion, and wherein the outer wall is spaced from the first planar portion a first predetermined distance;
b) a second extruded plastic, longitudinal panel provided with a second planar portion and a second longitudinal C-shaped flange located along a first peripheral edge thereof, wherein the second C-shaped flange includes an inner wall portion having an outer surface, an upper wall attached to the inner wall portion and a peripheral lip attached to the upper wall and having an outer surface, wherein the outer surface of said peripheral lip is spaced from the outer surface of the inner wall portion a second predetermined distance and the peripheral lip extends transversely from the upper wall a third predetermined distance, and wherein the second panel is provided with at least one resilient, inwardly disposed longitudinal rib extending along a second peripheral edge thereof;
c) a third extruded plastic, longitudinal panel attached to the first panel along the first peripheral edge but located on the opposite side of the panel to the first C-shaped flange, wherein the third panel has a second peripheral edge spaced from the first peripheral edge, the third panel being spaced from the first planar portion of the first panel, and wherein the second longitudinal peripheral edges of the first and third panels are spaced apart to form a receiving mouth for a poster holder supporting means;
d) the second flange being slidably received within the first flange, wherein the first predetermined distance is slightly smaller than the second predetermined distance and the third predetermined distance is less than the first predetermined distance, and wherein one of the flanges is resilient such that transverse rotation of one panel with respect to the other panel causes the panels to snap between an open and closed position; and e) wherein the first predetermined distance is greater than the third predetermined distance by a sufficient amount such that in the open position a gap is formed between the first planar portion and the second panel upper wall for receiving a poster therebetween.
a) a first extruded plastic, longitudinal panel provided with a first planar portion and a first longitudinal, C-shaped flange located along a first peripheral edge thereof, wherein the C-shaped flange includes an outer wall and an inturned tongue attached to the outer wall and disposed toward and spaced from the first planar portion, and wherein the outer wall is spaced from the first planar portion a first predetermined distance;
b) a second extruded plastic, longitudinal panel provided with a second planar portion and a second longitudinal C-shaped flange located along a first peripheral edge thereof, wherein the second C-shaped flange includes an inner wall portion having an outer surface, an upper wall attached to the inner wall portion and a peripheral lip attached to the upper wall and having an outer surface, wherein the outer surface of said peripheral lip is spaced from the outer surface of the inner wall portion a second predetermined distance and the peripheral lip extends transversely from the upper wall a third predetermined distance, and wherein the second panel is provided with at least one resilient, inwardly disposed longitudinal rib extending along a second peripheral edge thereof;
c) a third extruded plastic, longitudinal panel attached to the first panel along the first peripheral edge but located on the opposite side of the panel to the first C-shaped flange, wherein the third panel has a second peripheral edge spaced from the first peripheral edge, the third panel being spaced from the first planar portion of the first panel, and wherein the second longitudinal peripheral edges of the first and third panels are spaced apart to form a receiving mouth for a poster holder supporting means;
d) the second flange being slidably received within the first flange, wherein the first predetermined distance is slightly smaller than the second predetermined distance and the third predetermined distance is less than the first predetermined distance, and wherein one of the flanges is resilient such that transverse rotation of one panel with respect to the other panel causes the panels to snap between an open and closed position; and e) wherein the first predetermined distance is greater than the third predetermined distance by a sufficient amount such that in the open position a gap is formed between the first planar portion and the second panel upper wall for receiving a poster therebetween.
11. A panel holder according to claim 10 wherein the first predetermined distance is slightly less than the second predetermined distance such that in the closed position the first flange compresses the second flange thereby resiliently biasing the panels in the closed position.
12. A panel holder according to claim 10 wherein the first C-shaped flange is resilient such that it is elastically deformable during transverse rotation of the second panel with respect to the first panel for generating a force to snap the panels between an open and a closed position.
13. A panel holder according to claim 10 wherein the third panel has an inwardly arcuate shape and is resilient such that the first and third panels are able to grip the poster holder supporting means.
14. A panel holder, comprising:
a) an extruded plastic, longitudinal member provided with a first panel having an inwardly projecting longitudinal rib having a transverse planar portion, a first longitudinal C-shaped flange located along a first longitudinal peripheral edge thereof, the first C-shaped flange having an outer wall terminating in an inturned tongue disposed toward and spaced from the rib planar portion, the outer wall being spaced from the rib planar portion a first predetermined distance;
b) a second extruded plastic, longitudinal panel provided with a second inwardly arcuate panel portion and a second longitudinal C-shaped flange located along a first longitudinal peripheral edge thereof, wherein the second C-shaped flange includes an inner wall portion with an outer surface, an upper wall attached to the inner wall portion and a peripheral lip attached to the upper wall and having an outer surface, wherein said outer surface of the peripheral lip is spaced from the outer surface of the inner wall portion a second predetermined distance, and wherein the peripheral lip extends transversely from the upper wall a third predetermined distance;
c) the second flange being slidingly received within the first flange, wherein the first predetermined distance is slightly smaller than the second predetermined distance, and wherein the first flange is resilient such that transverse rotation of one panel with respect to the other panel causes the panels to snap between an open and closed position; and d) the first and second panels each being provided with a pair of resiliently soft, co-extruded, inwardly extending longitudinal ribs spaced from the first longitudinal peripheral edge of each panel, wherein the ribs are in registration and engaged when the panels are in the closed position for gripping a poster therebetween.
a) an extruded plastic, longitudinal member provided with a first panel having an inwardly projecting longitudinal rib having a transverse planar portion, a first longitudinal C-shaped flange located along a first longitudinal peripheral edge thereof, the first C-shaped flange having an outer wall terminating in an inturned tongue disposed toward and spaced from the rib planar portion, the outer wall being spaced from the rib planar portion a first predetermined distance;
b) a second extruded plastic, longitudinal panel provided with a second inwardly arcuate panel portion and a second longitudinal C-shaped flange located along a first longitudinal peripheral edge thereof, wherein the second C-shaped flange includes an inner wall portion with an outer surface, an upper wall attached to the inner wall portion and a peripheral lip attached to the upper wall and having an outer surface, wherein said outer surface of the peripheral lip is spaced from the outer surface of the inner wall portion a second predetermined distance, and wherein the peripheral lip extends transversely from the upper wall a third predetermined distance;
c) the second flange being slidingly received within the first flange, wherein the first predetermined distance is slightly smaller than the second predetermined distance, and wherein the first flange is resilient such that transverse rotation of one panel with respect to the other panel causes the panels to snap between an open and closed position; and d) the first and second panels each being provided with a pair of resiliently soft, co-extruded, inwardly extending longitudinal ribs spaced from the first longitudinal peripheral edge of each panel, wherein the ribs are in registration and engaged when the panels are in the closed position for gripping a poster therebetween.
15. A panel holder according to Claim 14 wherein the first longitudinal C-shaped flange is formed with a C-shaped, upwardly opening longitudinal chamber for slidably receiving hanger units therein.
16. A panel holder according to claim 1 wherein said second longitudinal panel has at least one longitudinal rib member formed thereon and located along a second peripheral edge of the second panel spaced from said second C-shaped flange, said at least one rib member being located on a side of said second panel facing said first panel and made of a softer, more resilient material than the second longitudinal panel.
17. A panel holder according to claim 16 wherein said second longitudinal panel has two longitudinal rib members formed thereon and located along said second peripheral edge of the second panel, said two rib members being located on said side of said second panel facing said first panel and made of a softer, more resilient material than the second longitudinal panel.
18. A panel holder according to claim 10 wherein said at least one longitudinal rib is made of a softer, more resilient, material than the second longitudinal panel.
19. A panel holder according to claim 18 wherein there are two resilient, inwardly disposed longitudinal ribs extending along said second peripheral edge of said second panel, said two ribs being made of a softer, more resilient material than the second longitudinal panel.
20. A panel holder comprising:
(a) a first elongate panel provided with a first planar portion and a longitudinal generally C-shaped flange located along a first peripheral edge thereof;
(b) a second elongate panel having a main portion with at least one longitudinal rib member formed thereon and located near a peripheral edge of said second panel spaced from said C-shaped flange, said at least one rib member being located on a side of said second panel facing said first planar portion when said second panel is in a closed, panel-gripping position and being made of a softer, more resilient material than the rest of the second panel;
(c) means for pivotably connecting said second elongate panel to said C-shaped flange so that said second panel can be pivoted from said closed position to an open position; and (d) means for releasably holding said second panel in said closed position.
(a) a first elongate panel provided with a first planar portion and a longitudinal generally C-shaped flange located along a first peripheral edge thereof;
(b) a second elongate panel having a main portion with at least one longitudinal rib member formed thereon and located near a peripheral edge of said second panel spaced from said C-shaped flange, said at least one rib member being located on a side of said second panel facing said first planar portion when said second panel is in a closed, panel-gripping position and being made of a softer, more resilient material than the rest of the second panel;
(c) means for pivotably connecting said second elongate panel to said C-shaped flange so that said second panel can be pivoted from said closed position to an open position; and (d) means for releasably holding said second panel in said closed position.
21. A panel holder according to claim 20 wherein there are two parallel, longitudinal rib members formed on said second elongate panel, said two rib members both being located on said side of said second panel facing said first planar portion and both being made of a softer, more resilient material than the rest of the second panel.
22. A panel holder according to claim 20 or 21 wherein said at least one rib member is co-extruded with the second elongate panel.
23. A panel holder according to claim 20 or 21 wherein both said first panel and said second panel are extruded from flexible plastic.
24. A panel holder according to claim 20 or 21 wherein said C-shaped flange is resilient such that it is elastically deformable during pivoting of said second panel between said closed and open positions.
25. A panel holder according to claim 20 wherein said first elongate panel has at least one longitudinal rib member formed on said first planar portion and located near a peripheral edge of said first panel spaced from said C-shaped flange, said at least one rib member being located on a side of said first planar portion facing said second panel and being made of a softer, more resilient material than the rest of the first panel.
26. A panel holder according to claim 25 wherein there are two parallel, longitudinal rib members formed on said first panel, said two rib members being located on said side of said first planar portion facing said second panel and both being made of a softer, more resilient material than the rest of said first panel.
27. A panel holder according to claim 25 or 26 wherein said at least one rib member on the first panel is co-extruded with the first elongate panel.
28. A panel holder according to claim 25 or 26 wherein both said first panel and said second panel are extruded from flexible plastic.
29. A panel holder, comprising:
(a) an elongate first member provided with a first panel having an inwardly projecting longitudinal rib with a transverse planar portion, a first longitudinal, generally C-shaped flange located along a first peripheral edge thereof and having an inturned tongue extending towards and spaced from said rib planar portion;
(b) an elongate second panel provided with a second panel portion and a second longitudinal C-shaped flange located along a first peripheral edge thereof, the second flange being slidably received within the first flange and said second panel being pivotable relative to said first member between an open position and a closed, panel-gripping position; and (c) at least one soft, co-extruded longitudinal rib formed on at least one of said first and second panels and located along a peripheral edge thereof spaced from said C-shaped flanges, said at least one rib member being located on a side of its respective panel facing the other of said panels in the closed position of the second panel and being made of a softer, more resilient material than its respective panel.
(a) an elongate first member provided with a first panel having an inwardly projecting longitudinal rib with a transverse planar portion, a first longitudinal, generally C-shaped flange located along a first peripheral edge thereof and having an inturned tongue extending towards and spaced from said rib planar portion;
(b) an elongate second panel provided with a second panel portion and a second longitudinal C-shaped flange located along a first peripheral edge thereof, the second flange being slidably received within the first flange and said second panel being pivotable relative to said first member between an open position and a closed, panel-gripping position; and (c) at least one soft, co-extruded longitudinal rib formed on at least one of said first and second panels and located along a peripheral edge thereof spaced from said C-shaped flanges, said at least one rib member being located on a side of its respective panel facing the other of said panels in the closed position of the second panel and being made of a softer, more resilient material than its respective panel.
30. A panel holder according to claim 29 wherein at least one soft, co-extruded longitudinal rib is formed on each of said first and second panels and is located on a peripheral edge of its respective panel spaced from said C-shaped flanges and the soft longitudinal ribs are all made of a softer, more resilient material than their respective panels.
31. A panel holder comprising a first elongate member having a first elongate panel portion with first and second longitudinal peripheral edges, a second elongate member having a second panel portion and pivotable with respect to said first member, means for pivotably connecting said second member to said first member along said first peripheral edge so that the two elongate members can pivot between an open position and a closed, panel-gripping position, and two soft co-extruded longitudinal ribs formed on said second panel portion and located adjacent a peripheral edge thereof spaced from said first peripheral edge, said two ribs being located on a side of said second panel portion facing said first panel portion in said closed position, and being made of a softer, more resilient material than the second elongate member, wherein said ribs are substantially straight when they are viewed in transverse cross-section and project inwardly towards said first panel portion.
32. A panel holder according to claim 31 including means for releasably holding said first and second elongate members in said closed, panel-gripping position.
33. A panel holder according to claims 31 or 32 wherein said ribs are made of soft PVC.
34. A panel holder according to any one of claims 31 and 33 wherein said second panel portion extends in a plane arranged at a small acute angle to said first panel portion and said ribs extend inwardly from said second panel portion at a substantial angle thereto.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002035706A CA2035706C (en) | 1991-02-05 | 1991-02-05 | Snap closing panel holder |
| US07/830,890 US5364057A (en) | 1991-02-05 | 1992-02-04 | Snap closing panel holder |
| US08/332,124 US5584461A (en) | 1991-02-05 | 1994-10-31 | Snap closing panel holder |
| US08/757,437 US5927671A (en) | 1991-02-05 | 1996-11-27 | Snap closing panel holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002035706A CA2035706C (en) | 1991-02-05 | 1991-02-05 | Snap closing panel holder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2035706A1 CA2035706A1 (en) | 1992-08-06 |
| CA2035706C true CA2035706C (en) | 1999-03-16 |
Family
ID=4146960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002035706A Expired - Fee Related CA2035706C (en) | 1991-02-05 | 1991-02-05 | Snap closing panel holder |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US5364057A (en) |
| CA (1) | CA2035706C (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9612731D0 (en) * | 1996-06-18 | 1996-08-21 | Kilpatrick Gary S | Display holder |
| US5921518A (en) * | 1996-09-23 | 1999-07-13 | Bernardi; Eugene L. | Flexible picture hanger |
| US5711057A (en) * | 1996-10-15 | 1998-01-27 | Dameron; Joseph Thomas | Clamping apparatus having snap-fitting pivot structure and method |
| JP2005535479A (en) * | 2002-08-14 | 2005-11-24 | ミードウエストヴェイコ コーポレーション | Two piece calendar holder |
| WO2004078006A1 (en) * | 2003-03-03 | 2004-09-16 | Julian Geoffrey Hilder | A frame assembly |
| DE602004010259T2 (en) * | 2004-09-08 | 2008-09-25 | J. Schürgers | Flexible picture element display system, system support member, support member assembly, system assembly method, and image display system |
| US20060236576A1 (en) * | 2005-04-11 | 2006-10-26 | Wear Stuart C W | Clasp for hanging material |
| AU2006203115B2 (en) * | 2005-07-20 | 2011-06-23 | The Australian Steel Company (Operations) Pty Ltd | Panel seating device and fence assembly utilising the connector |
| US7445246B1 (en) | 2007-11-27 | 2008-11-04 | Gary Plastic Packaging Corp. | Clipboard assembly |
| DK200801277A (en) * | 2008-09-11 | 2009-04-05 | Tp Holding Hadsund Aps | Procedure and List for Edge Reinforcement and Poster Suspension |
| GB2473431B (en) * | 2009-09-09 | 2013-01-02 | Arken Pop Ltd | Improvements in or relating to sprung picture frames |
| US8356415B2 (en) * | 2009-12-18 | 2013-01-22 | Wen-Chen Lin | Scraping tool with blade lock assembly |
| US8800946B2 (en) * | 2012-12-03 | 2014-08-12 | Southern Imperial, Inc. | Retail merchandise display clip |
| WO2022193237A1 (en) * | 2021-03-18 | 2022-09-22 | 清展科技股份有限公司 | Component for easily disassembling and assembling screen, and screen device provided with same |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2882633A (en) * | 1957-07-26 | 1959-04-21 | Arlington Aluminum Co | Poster holder |
| US2941324A (en) * | 1958-12-23 | 1960-06-21 | William V Waxgiser | Display holder for sheets of paper, fabric, and the like |
| US2979842A (en) * | 1959-10-29 | 1961-04-18 | Reynolds Metals Co | Structure for detachably mounting articles to be exhibited |
| US3249351A (en) * | 1961-12-26 | 1966-05-03 | Wilfred A Smith | Clamp |
| FR1364606A (en) * | 1963-03-01 | 1964-06-26 | File frame with practical pressers | |
| US3643362A (en) * | 1969-12-08 | 1972-02-22 | I D L Inc | Sign display device |
| US4007552A (en) * | 1973-09-04 | 1977-02-15 | Abc Extrusion Company | Extruded aluminum sign frame system |
| US3955298A (en) * | 1975-01-31 | 1976-05-11 | Kapstad Odd B | Poster display frame |
| CA1070945A (en) * | 1976-08-12 | 1980-02-05 | Kessler Products Co. | Snap-in plastic frame for panels |
| US4145828A (en) * | 1977-10-11 | 1979-03-27 | Marketing Displays, Inc. | Poster display device |
| SE414976B (en) * | 1977-12-20 | 1980-08-25 | Af Segerstad Peder Hard | LIST FOR FITTING A POSTER |
| ZA823629B (en) * | 1982-05-25 | 1983-03-30 | Malcolm Grant Heard | Picture frame |
| GB2127686B (en) * | 1982-09-27 | 1986-04-23 | Marketing Displays Inc | Improved spring-loaded poster frame |
| US4523400A (en) * | 1982-09-27 | 1985-06-18 | Marketing Displays, Inc. | Plastic biased poster frame |
| US4703575A (en) * | 1985-09-30 | 1987-11-03 | Merchandising Display Corporation | Magnetic sign mount |
| US4702025A (en) * | 1985-11-25 | 1987-10-27 | M & M Displays | Display frame |
| US4835891A (en) * | 1988-02-11 | 1989-06-06 | Joffe Edward J | Molded sheet holding clamps and frames |
| US4864699A (en) * | 1988-02-24 | 1989-09-12 | Whitcomb Valerie J | Clip apparatus |
-
1991
- 1991-02-05 CA CA002035706A patent/CA2035706C/en not_active Expired - Fee Related
-
1992
- 1992-02-04 US US07/830,890 patent/US5364057A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US5364057A (en) | 1994-11-15 |
| CA2035706A1 (en) | 1992-08-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |