|Publication number||US3331634 A|
|Publication date||Jul 18, 1967|
|Filing date||Sep 23, 1965|
|Priority date||Sep 23, 1965|
|Publication number||US 3331634 A, US 3331634A, US-A-3331634, US3331634 A, US3331634A|
|Inventors||Jr Clyde W Harrison|
|Original Assignee||Jr Clyde W Harrison|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (11), Referenced by (28), Classifications (11)|
|External Links: USPTO, USPTO Assignment, Espacenet|
y 1967 1 c. w. HARRISON, JR 3,331,634
CHAIR Filed Sept. 23, 1965 I 4 Sheets-Sheet 1 FIG. 11 I l INVENTOR.
CLYDE W HARP/SON,c/R
, ATTQRNEES y 1967 1 c. w. HARRISON, JR 3,33
CHAIR Filed Sept. 23, 1965 4 Sheets-Sheet 5 I NVEN TOR.
w v CLYDE WHARR/5ON,t/E
A 7' TOR/v5 5 United States Patent Filed Sept. 23, 1965, Ser. No. 489,512 3 Claims. (Cl. 297442) This invention pertains to a childs chair and more particularly to a collapsible chair constructed of fiberboard or the like.
Prior art childrens collapsible chairs are in general very fragile and will not withstand very much abuse. These prior art chairs generally consist of one or two layers of a fiberboard, such as cardboard or the like, the pieces of which are attached together by some extra means such as screws, clips, etc. Besides being fragile many of these prior art chairs are extremely complicated to assemble and require additional tools and materials.
In the present device a first blank, which may be composed of cardboard such as 200 pound B. Flute board, has a plurality of cuts and score lines therein. This first blank is folded to form a substantially box-shaped structure the bottom of which is locked together in a standard fashion Well known to those skilled in the art of box making. One of the sides, braced by'portions of the adjacent sides, extends upwardly a substantial distance above the remaining three sides to form the back rest of the chair. All of the edges fold over to form braces and to interlock with the remainder of the chair, which will be explained presently, to hold the entire assembly rigidly in position. A plurality of blanks are used internally within the box-like structure and the back rest has braces to strengthen the entire assembly. A blank is then interlocked with the first blank to hold the braces and the first blank rigidly in place and to form a portion of the seat and the portion of the back rest immediately adjacent the seat.
Thus, the present chair is constructed entirely of cardboard or the like and is assembled in a manner so as to be extremely sturdy. In addition, the various parts of the present chair are completely interlocking and, therefore, no additional materials or tools are required in the assembly thereof. As an added feature the outer surfaces of the chair may be coated with a plastic material to waterproof the chair and to provide a finish from which dirt and the like can be easily removed.
It is an object of the present invention to provide a new and improved collapsible childs chair.
It is a further object of the present invention to provide blanks which when assembled take the form of a chair that is extremely sturdy.
It is a further object of the present invention to provide a collapsible chair which is easily and quickly assembled without the use of additional tools or materials.
It is a further object of the present invention to provide a childs chair which is inexpensive and simultaneously extremely sturdy.
These and other objects of this invention will become apparent to those skilled in the art upon consideration of the accompanying specification, claims, and drawings.
Referring to the drawings, wherein like characters indicate like parts throughout the figures:
FIG. 1 is a view in perspective of the present chair completely assembled, parts thereof broken away;
3,331,534 Patented July 18, 1967 FIG. 2 is a pattern view of a blank which forms the main frame of the present invention;
FIG. 3 is a pattern view of the blank which forms a portion of the seat and back rest of the present inventron;
FIG. 4 is a pattern view of a blank which forms an internal brace in the present invention;
FIG. 5 is a pattern view of a blank which forms an internal brace in the present invention;
FIG. 6 is a pattern view of a blank which forms an internal brace in the present invention;
FIG. 7 is a view in perspective of the blank illustrated in FIG. 2 partially assembled;
FIG. 8 is a view inperspective of the blank illustrated in FIG. 2 completely assembled;
FIG. 9 is an exploded view in perspective of the blanks illustrated in FIGS. 4-6 illustrating their folded and interlocking positions;
FIG. 10 is a view in perspective of the assembly illustrated in FIG. 9 positioned within the assembly illustrated in FIG. 8;
FIG. 11 is a view in perspective of the blank illustrated in FIG. 3 folded for insertion into the assembly illustrated in FIG. 10;
FIG. 12 is a sectional view as seen from the line 12-12 in FIG. 1;
FIG. 13 is a sectional view as seen from the line 13-13 in FIG. 12, parts thereof broken away and shown in sections;
FIG. 14 is a sectional view as seen in the line 1414 in FIG. 13; and
FIG. 15 is a bottom view of the present invention.
In the figures the numeral 10 generally designates the first blank which forms the basic frame of the chair when correctly folded. The first blank 10 is somewhat rectangular shaped and is composed of four sections numbered from left to right in FIG. 2, 11, 12, 13 and 14. The adjoining edges of each of the sections 11 through 14 are defined by score lines 15, 16, and 17 respectively. The score lines 15-17 are substantially parallel and extend vertically to eventually form three of the corners of the chair while the fourth corner is formed by the outer edges, the left edge being designated Bend the right edge defined by a score line 19 having a small substantially rectangular tab 20 extending the length thereof and utilized to aid in maintaining the blank in the assembled position. Each of the sections 11-14 has a tab 21-24 respectively attached to the lower edge thereof and separated therefrom by score lines 25-28 respectively.
In the assembly of the present invention the first blank 10 is folded along each of the score lines 15, 16, 17 and 19 to form a substantially box like structure with the tab 20 lying parallel to the section 11 and adjacent thereto. The tab 20 may be attached to the inner surface of the section 11 by gluing, stitching, etc. or it may be constructed so that it is interlocking and, thereby, holds itself in position. Each of the tabs 21-24 are bent upwardly perpendicular to their respective sections and interlocked to form a bottom as illustrated in FIG. 15. Since this is a common locking bottom well known to those skilled in the box industry, it will not be discussed further.
In the assembled chair the section 11 forms the front thereof while the section 12 forms the left side, the secare connected to the upper edge thereof are .mirror images of each other and, therefore, only the construc tion of the section 14 will be elaborated upon. Referring to FIG. 2 the upper edge of the section 14 is defined by a score line which extends from the upper end of the score line 19 towards the score line 17 and downwardly at a slight angle to the perpendicular of score line 19. The score line 30 extends inwardly a substantial distance where it joins a score line 31 that extends upwardly at'an angle to the score line 30 somewhat greater than 90. The score line 31 is inclined at an angle toward the score line 17 and extends upwardly to within a short distance of the score line 17 where it is cut off along an edge 32 which is substantially perpendicular to the 'score line 31. The portion of the section 14 defined by 'the score lines 17 and 31 and the edge 32 forms a side of the back rest of the chair and extends a considerable distance above the score line30 which forms a side of the seat portion of the chair. A tab generally designated 14 along the score line 31. The upper edge of the tab 35 is formed by a continuation of the edge 32, previously explained. The outer edge 36 of the tab 35 is substantially parallel to the score line 31 and spaced therefrom. The tab 35 has a cut 37 therein substantially perpendicu lar to the outer edge 36 and extending inwardly therefrom a short distance. The cut 37 in combination with the edge 32 and the edge 36 form a somewhat squareshaped ear 38. A score line 39 extends from the junction ofthe score lines 30 and 31 substantially perpendicular to the score line 30 to the inner end of the cut 37. The lower edge of the tab 35 is defined by a cut 40 which extends outwardly and upwardly from the junction of the score'lines 30 and 39 at approximately a angle to the score line 39. The cut 40 extends outwardly a substantial distance after which it bends at an angle and continues to the edge 36 along a line approximately parallel to the score line 30. The edge 36 and the score line 39 converge toward the upper end of tab 35 at an angle approximately equal to the converging angle between the score lines 17 and 31, which define the portion of section 14 forming the side of the back rest. Therefore, when tab 35 isbent at approximately a 90 angle along score 3 lines 31 and 39 the edge 36, except for ear 38, is in abut ment with the section 13 and the entire flap 35 acts as a support for. the back rest while interlocking with remaining portions as will be described presently.
A tab generally designated 45 is attached to the section 14 along the score line 30. The tab 45 has a first score line 46,"spaced from the score line 30 approximately twice the width of the material being used for the blank, that extends from the cut 40, which forms a portion of the left edge of the tab 45, to the right edge of the tab 45. The rightedge of-the tab 45 extends from the score line 19 upwardly and slightly inwardly to allow the tab 45 to clear the section 11 when the tab 45 and the section 11 are folded into place. The score lines 30 and 46 are spaced apart a' sufficient distance to allow the tab 45 to be substantially parallel and adjacent to the section 14 when the material is bent at approximately90 along each of the score lines 30 and 46.
A second score line 47 is substantially parallel to the score line 46 and spaced therefrom a distance approxi- 'mately equal to or slightly less than the thickness of a cushion or the like which it is desired to place on the seat of the present chair. The portion of the tab 45 between the score line 46 and 47 lies parallel and adjacent 35 is attached to the section.
to the section '14 when the'tab 45 is properly folded and acts 'as a ridge along one side of the seat which 'holds a cushion or the like fixedly in place as will be explained presently. The score line 47 extends from approximately the end of the cut 40 to the right edge of the tab 45.
The right edge of the tab 45, after turning inward slightly as explained, extends approximately perpendicular to the score line 46 past the score line 47 to 'a score line 48, which is parallel to the score line 47 and spaced therefrom a distance slightly smaller than one-third of tab 45 extend upwardly in a parallel relationship but form an angle with the score line 48 which is approximately twice the angle which the score line 30 forms with the vertical score line 19. The upper end of the tab 45 is terminated in an edge 49 which extends from the left to the right edge of the tab 45 and is approximately perpendicular thereto. 3
Because of the angle which the left and right edge of the tab 45 make with the. score line 48, when the tab 45 is properly folded the upper edge 49 thereof is par allel to and in abutment with the "bottom of the structure. Thus, with a bend at each of the score lines 30, 46, 47 and 48 the first portion of the tab 45 is substantially horizontal, the second portion of the tab 45 between score lines 46 and 47 is substantially vertical and parallel to the section 14, the third section of the tab 45 between the score lines 47 and 48 is substantially horizontal and forms a portion of the seat and the fourth'portion of the tab 45 between the score lines 48 and the upper edge 49 forms a substantially vertical brace for the portion of the seat just described. The .tab 45 has a slot 50 therein'located approximately centrally between the left and right edges thereof'and extending from the score line 47 to a distance approximately half way between the score line 48 and the upper edge 49. All parts attached to section 12 which are similar to parts attached to section 14 will be given similar numbers with a prime added to denote the similarity.
The section 13 is substantially rectangular in shape with the upper edge defined by a score line 55 which extends from the score line 16 at approximately the end of the edge 32' to the score line 17 at approximately the end of the edge 32. The score lines 16 and 17 extend vertically upward past the score line 55 a short distance to a score line 56 which is parallel to the score line 55 and spaced therefrom. The distance between the score line 55 and the score line 56 is approximately equal to the distance between the score line 17 and the score line 31 at the edge 32. A pair of small tabs 57 and 58 are located at either end of the portion of section 13 between the score lines 16 and 17 and the score lines 55 and 56. The upper edge of each of the tabs 57 and 58 is an extension of the score line 56 and the lower edge is parallel and adjacent to the edges 32 and 3250f the tabs 35 and 35. The outer edges join the upper and lower edges-of the tab and are parallel to the score lines 16 and 17.
A score line 59 is spaced from the score line 56 a distance approximately equal'to the distance of the cut I 37 from the upper edge 32 on the tab 35. The left and right edges 60 and 61 respectively of the portion between the score lines 56 and 59 extend from the upper limits of the score lines 16 and 17- to. the score line 59 at an inwardly sloping angle of approximately 45. An upper edge 62 is parallel to the score line 59 and spaced there- The upper edges of each of the tabs 65 and 66 are defined by an extension of the edge 62 while the outer edges lie along an extension of the score lines 16 and 17 respectively. The lower edges of the tabs 65 and 66 ex tend from the outer ends of the score line 59 outwardly and downwardly at an angle to the score line 59 which is approximately equal to the angle between the score lines 17 and 31. Thus, the tabs 65 and 66 are similar to a small portion of the section 14 lying between the score lines 17 and 31 and are designed to ultimately lie parallel thereto.
In folding and assembly of the first blank the small tabs 57 and 58 are bent inwardly at 90 to the plane of the section 13. The upper portion of the section 13 is bent along the score line 55 slightly less than 90 toward the front of the chair. The tabs 35 and 35' are then bent inwardly along the score lines 31 and 31' and the outer portions thereof are bent outwardly toward the front of the chair in a reverse bend along the score lines 39 and 39' so that the upper portion of the section 13 may be bent along the score lines 56 and 59 about the small ears 38 and 38' at the upper end of the larger tabs 35 and 35'. During this bending process the tabs 65 and 66 at the upper end of the section 13 are bent at approximately 90 to the portion between the score line 59 and the upper edge 62. The tabs 35 and 35 are then bent inwardly along the score lines 39 and 39 so that they overlie the tabs 65 and 66 and the entire assembly is fixedly inter locked as illustrated in FIG. 8.
A tab generally designated 70 is connected to the upper edge of the section 11 along a score line 71 which is perpendicular to the edge 18 thereof. A second score line 72 is parallel to the line 71 and spaced therefrom approximately twice the thickness of the first blank 10. The left and right edges of the portion between the score lines 71 and 72 are angled slightly toward each other to allow for the folding of the tab 70 into the structure. A score line 73 is parallel to the score line 72 and spaced therefrom a distance equal to or slightly less than the thickness of the cushion which is placed on the seat. The left and right edges of the portion between the score lines 72 and 73 are parallel and perpendicular to the score lines 72 and 73. A score line 74 is parallel to the score line 73 and spaced therefrom a distance substantially equal to the distance between the right edge of the tab 45 and the slot 50 centrally located therein. The edges of the tab 70 extend in a parallel relationship perpendicular to the lines 72 and 73 past the line 74 a substantial distance to an upper edge 75 of the tab 70. The tab 70 has a pair of parallel spaced apart cuts 76 and 77 extending downwardly from the upper edge 75 to approximately the center thereof. When the tab 70 is properly folded into the structure the portion between the score lines 73 and 74 lies horizontal and forms the front portion of the seat while the portion between the score line 74 and the upper edge 75 lies perpendicular to the bottom with the edge 75 in abutment therewith. The cuts 76 and 77 interlock with the slots and 50 respectively to maintain the entire structure in the folded position illustrated in FIG. 8.
FIG. 4 illustrates a second blank generally designated 80 which is utilized as an internal brace under the seat and back rest. Blank 80 has a substantially rectangular shape with a bottom 81 perpendicular to two spaced apart ends 82 and 83. The upper edge of blank 80 extends inwardly from each of the sides 82 and 83 along lines 84 and 85 respectively which extend inwardly and upwardly at a slight angle to the ends 82 and 83. Portions 86 and 87 of the upper edge extend downwardly perpendicular to the lines 84 and 85 and from the ends thereof. A portion 88 completes the upper edge, extending from the end of the line 86 to the end of the line 87 and lying parallel to the bottom edge 81. The angles between the edges 82 and 86 and the edges 83 and 87 are equal and are approxi mately equal to the angle between the score lines 17 and 31 of section 14.
The blank has a pair of score lines 89 and 90 perpendicular to the lower edge 81 and spaced apart an approximately equal distance from the center thereof. A pair of parallel spaced apart cuts 91 and 92 extend downwardly from the portion 88 of the upper edge, approximately perpendicular thereto and adjacent the junction of the edges 86 and 87 therewith. The edge 86 has two parallel spaced apart cuts 93 and 94 therein which are spaced at short distance from the extreme upper edge 84 and parallel thereto. The cuts 93 and 94 are of different lengths and extend into the blank 80 approximately equal distances from the left edge 82. Two cuts 95 and 96 are substantially mirror images of the cuts 93 and 94 and extend into the blank 80 from the edge 87. In assembly the blank 80 is folded along the score lines 89 and 90 so that the portion between the left edge 82 and the score line 89 is substantially parallel to the portion between the right edge 83 and the score line 90 as illustrated in FIG. 9.
A third blank generally designated 100 is substantially rectangular in shape and has a lower edge 101 which is parallel to the upper edge 102. Two spaced apart substantially parallel cuts 103 and 104 extend from the lower edge 101 to approximately the center of the blank 100. The cuts 103 and 104 are spaced apart and of a length to mate with the cuts 91 and 92 in the upper edge 88 of the blank 80. When the cut 103 is placed in the cut 91 and the cut 104 is placed in the cut 92 the upper edge 102 of the blank 100 is approximately in a plane with the edge 88 of the blank 80 while the lower edges 101 and 81 are also in a plane.
A fourth blank generally designated is substantially rectangular in shape with the upper edge 111 parallel to the lower edge 112. The blank 110 has two substantially parallel spaced apart score lines 113 and 114 approximately centrally located thereon and parallel to the edges 111 and 112. The left edge 115 of the blank 110 is perpendicular to the edges 111 and 112 from the edge 112 to the score line 114 and from the edge 111 to the score line 113 while the portion between the score lines 113 and 114 lies at an angle to the perpendicular portions which is approximately equal to the angle between the score lines 17 and 31 of the section 14. The right edge 116 of the blank 110 is a mirror image of the left edge 115. The blank 110 has two parallel spaced apart cuts 117 and 118 extending downwardly to approximately midway from the upper edge 111 to the score line 113 and two parallel spaced apart cuts 119 and 120 extending upwardly to approximately midway from the lower edge 112 to the score line 114. When the blank 110 is folded along the score lines 113 and 114 so that the section between the upper edge 111 and the score line 113 is parallel to the section between the lower edge 112 and the score line 114, the cut 117 mates with the cut 93 in the blank 80, the cuts 118 and 95 mate, the cuts 119 and 94 mate and the cuts 120 and 96 mate as illustrated in FIG. 9. When the three blanks 80, 100 and 110 are assembled as illustrated in FIG. 9 the entire assembly is placed Within the assembled blank 10, illustrated in FIG. 8, as illustrated in FIG. 10. Thus, the three blanks 80, 100 and 110 form internal interlocking braces for the seat and back rest portions.
A fifth blank illustrated in FIG. 3 has a lower rectangular portion 126 having a lower edge 127, left and right edges 128 and 129 respectively and an upper edge defined by a score line 130. The portion 126 also has a pair of parallel spaced apart cuts 131 and 132 extending upwardly to approximately midway from the lower edge 127 to the score line and perpendicular thereto. The portion 126 of the blank 125 is substantially similar to the blank 100. Blank 125 has a second rectangular portion 135 adjacent the portion 126 and attached thereto along the score 130. The left and right edges of the portion 135 are extensions of the edges 128 and 129 of the portion 126. The upper edge of the portion 135 is defined by a score line 136 which is parallel to and the same length as the score line 130. A third portion 137 of the blank 125 has a lower edge defined by the score line 136. The left and right edges of the portion 137 are defined by score lines 138 and 139 respectively'which extend upwardly and inwardly from the junctions of the score line 136 with the edges 128 and 129 respectively. The angles which the score lines 138 and 139 make with the edges 128 and 129 are substantially equal to the angle between the score line 17 and the score line 31 of the section 14. The upper ends of the score lines 138 and 139 are connected by a score line 140 which is parallel to the score line 136. The edges defined by the score lines 138, 139 and 140 each have a tab 141, 142 and 143 attached thereto, respectively. The tab 141 is shaped to overlie the major part of the tab 35' lying between the score line 39' and the edge 36'. The tab 142 is a mirror image of the tab 141. The tab 143 is substantially rectangular shaped and is approximately the same width as the portion of section 13 between the score line 59 and the upper edge 62.
The blank 125 is folded as illustrated in FIG. 11 so that the sections 126 and 135 are approximately perpendicular and the tabs 141, 142 and 143- are approximately perpendicular to the section 137. The section 137 is folded along the score 136 so that it lies at an angle to the section 135 which is approximately equal to the angle between the score line 17 and 31 of the section 14. The folded blank 125 illustrated in FIG. 11 is then assembled in'the assembly illustrated in FIG. so that the cuts 131 and 132 of the blank 125 mate with the slots 56 and 50' of the blank 10. The portion 135 of the blank 125 lies parallel and forms the rear portion of the seat while the portion 137 extends upwardly therefrom and forms a portion of the back rest. The tabs 141, 142 and 143 of the blank 125 are parallel and adjacent the portion of the tab 35 between the score line 39' and the edge 36', the portion of the tab 35 between the score line 3-9 and the edge '36 and the portion of the section 13 between the score line 59 and the upper edge 62 respectively.
When the entire structure is assembled a rectangular shaped cushion 150 or the like may be placed on the seat as illustrated in FIG. 1. As previously mentioned this cushion may be of a thickness equal to or slightly greater than the distance between the score lines 46-47 and 72-73, which, as can be seen in the figures, provide a ridge along the sides and front of the seat to accommodate a cushion such as 150.
Thus, a childs chair is disclosed which may be constructed completely of a foldable fiberboard, such as cardboard or the like, and which is easily assembled without the use of extra tools, fasteners, etc. The various blanks of the chair are completely interlocking and maintain the chair rigidly in its assembled position. In addition, the chair has a great many braces and the like along the edges and internally to make it extremely rugged and durable.
While I have shown and described a specific embodiment of this invention, further modifications and improvements will appear to those skilled'in the art. I desire to be understood, therefore, that this invention is not limited to the particular forms shown and I intend in the appended claims to cover all modifications which do not depart from the spirit and scope of this invention.
1. A blank for a childs collapsible piece of furniture comprising:
(a) a generally rectangular piece of foldable material having four parallel spaced apart score lines extending substantially from the lower edge to the upper edge;
(b) a plurality of interlocking tabs extending outwardly from said lower edge and having a score line at the junction of said tabs and said lower edge extending in a substantially straight line along said lower edge substantially perpendicular to said parallel score lines;
8 '(c) said rectangular piece folding along said parallel score lines to form a four-sided box-shaped structure with a'portion overlapping for purpose of affixing said piece in said folded position and said interlock:
ing tabs folding inwardly to form a bottom which interlocks to hold said tabs in the folded position; (d) substantially rectangular shaped tabs extending upwardly from score lines Which define the upper V edges of two opposite sides, each of said rectangular shaped tabs having score lines and a substantially centrally located slot therein and each folding inwardly and downwardly to form braces within said structure with said slots lying in a plane perpendicular to the bottom and said opposite sides;
(e) one of said remaining sides having a substantially rectangular shaped tab extending upwardly from a score line which defines the upper edge thereof with a plurality of spaced apart score lines extending substantially parallel to the outer edge thereof and two spaced apart parallel cuts extending inwardly from said outer edge, said last mentioned tab folding so said cuts mate with said slots to interlock said structure firmly in position and so a portion of said last mentioned tab lies substantially horizontal to form a portion of a seat;
(f) a portion of the fourth side of said four sided structure extending upwardly a substantial distance above the three sides having rectangular shaped tabs attached thereto and having at least one tab extending upwardly from the upper edge thereof and additional tabs extending outwardly from said upwardly extending tab, said upwardly extending tab having cuts and score lines therein to facilitate folding said 7 tab inwardly to form a relatively wide, reinforced portion having a generally rectangularly shaped cross section and positioned adjacent the upper edge of said fourth side; and
(g) said two opposite sides each having upwardly directed extensions joined to the upwardly extending portion of said fourth side along the parallel spaced apart score lines between said two opposite sides, said fourth side and each of said extensions having at least one tab extending outwardly from the outer edges thereof, said outwardly extending tabs joined to said extensions having cuts and score lines therein to facilitate folding said tabs inwardly to form a relatively wide reinforced portion having a generally rectangularly shaped cross section and positioned adjacent outer edges of said fourth side, and said reinforced portion adjacent either outer edge of said one side interlocking with said additional tabs of the relatively wide reinforced portion at the upper edge of said fourth side to maintain the folded positron.
2. A collapsible childs chair comprising a first blank constructed and assembled as set forth in claim 1 and having in addition a second substantially rectangular shaped blank having two parallel spaced apart cuts in one end thereof adapted'to mate with said slots in said rectangular shaped tabs extending from said two opposite sides when'in the folded position and having a plurality of score lines substantially perpendicular to said cuts in said second blank to facilitate folding and interlocking said second blank with said first blank so that a portion thereof is substantially horizontal and forms a portion of said seat and a portion thereof is somewhat vertical and cooperates with said fourth side of said first blank to form a back rest, said second blank further having a plurality of tabs thereon attached to the back rest portion which interlock with said fourth side to maintain said second blank in the folded position.
3. A collapsible childs chair as set forth in claim 2 having in addition a plurality of internal blanks which interlock with the first and second blanks to form braces;
(References on following page) References Cited UNITED STATES PATENTS Richards.
Lanth et a1 29716 Parrott 297-457 Rowe 297442 Volland 297-442 Smith 297442 Holden 297442 Holden 297442 Smith 297442 Lyles 297442 Smith et a1. 297442 DAVID J. WILLIAMOWSKI, Primary Examiner.
FRANK B. SHERRY, FRANCIS K. ZUGEL, Examiners.
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|International Classification||A47C5/00, A47D1/00|
|Cooperative Classification||A47C4/021, A47C4/03, A47D1/02, A47C5/005|
|European Classification||A47C4/03, A47C4/02C, A47C5/00C, A47D1/02|