US 3298415 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
Jan. 17, 1967 M. J. was 3,298,415
" MNDAUGQSJ-KLYGIS CLOSURES FOR LARGE MOUTH CONTAINERS 2 Sheets-Sheet 1 Filed April 7, 1964 INVENTOR jj 1511.17, 1967 M. J. KLYGISI 3,298,415 I CLOSURES FOR LARGE MOUTH CONTAINERS Filed April 7. 1964 2 Sheets-Sheet 2 Mmoauems J-KLYGIS BY H W ATTORNEYS INVENTOR 3, N CLOSURES FOR LARGEMOUTHCONTAINERS Mindaugas Julius Klygis, Chicago, Ill., assignor to Continental Can Company, Inn, New York,N.Y., a corporation of'NewYork i Y Filed Apr. 7, 1964, Set. No. 357,937 y 4 Claims, (Cl. 150-.5)"
This invention relates to new and novel closure assemblies and more particularly to assemblies comprising a snap-enclosure member or a screw type closure member, either of which is formed of flexible material, and a container formedof flexible material.
It is old and well known to form containers, and closure members" therefor, from flexible thermoplastic material. Many offthe prior vart containers have included necks with screw threads formed thereon for cooperating with a screw-threaded closure member or cap, whilefother well-known containers have included necks with protuberances thereon forcooperating with a snap-on type of closure memberor cap. Such containersdonot always provide a'satisfactory seal such that liquids and'gra'nulated powdery materials maybe packaged therein Without troublesome leakage or possible spillage. The..usual cause of leakage in .the prior art containers' esults from imperfect cooperationbetween the connecting means on the container and the closuremember. Such imperfect cooperation may result because of manufacturing tolerances or from' improper design. s v I I It is an object of this invention to provide a new and novel container assembly wherein an improved seal is provided between a container and a closure member without reliance upon sealing rings or sealing compounds.
Anotlier object of this invention is to provide a container assembly wherein the container assembly comprises a closure member and a container formed of flexible thermoplastic. material and thecontainer includes a flexible upper portion which deforms and 'flexes ,within an annular cavity of the closure member to provide a tight seal upon assembly of the closure member with-the container. t y
Another objectof this invention. is to provide a plastic snap-on closure member comprising a centerpanel, an inner wall extending upwardly and outwardly from the center panel, an outerwall. spaced. outwardly'from the inner wall. and connected thereto by a bight portion to define an annular cavity, an upwardly and outwardly facing shoulder formed on the inner wall and underlying the bight portion, and locking rib. means on the outer wall extending inwardly therefrom.
Another object of this inventionlis to provide a snapon closure member, of the type set forth above, wherein theinner wall is spaced outwardly from the center panel by a recessed chuck panel, the upwardlyand outwardly facing shoulder being defined by a thickened portion of the innerwall. e
Another object of this invention is to provide a flexible thermoplastic container which includes an upper container portion and a neck portion, the upper container portion curving upwardlyand inwardly and being provided with an upwardly tapered and inwardly facing flexible flange, the flange having a terminal edge defining a filling opening for the containenthe upper container portion merging-with the neck portion and being. offset therefrom to define an annular locking-bead.
' Another object ofthis invention is to provide a container, of the type set forth above, wherein the annular locking bead includes .an-outwardly and downwardly facthis invention is to provide a flexi- United States Patent 3,298,4 l5 Pateriteddarn. '17, 1967" "ice ble plastic-closure member comprising a center panel and depending innerand outer walls disposed in spaced relation to definean annular cavity, screw thread locking means on the inside surface ofthe outer wall, and. projections on the center panel defining aslot for receiving a tool to aid in connecting and disconnecting the closure membertoacontainer I i I i n 1 A further object of this invention is to providean assembly comprising a closure member formed of flexible material and arcontainerformed of flexible material, the closure member 'comprisinga center panel, an inner wall extending upwardly and outwardly from the center panel, an outer .wall spaced outwardly from the inner wall, and connectedthereto .by a bight port ion to define an annular cavity, an upwardlyand outwardly facing shoulder formed on the inner wall and underlying the bight portion, and locking rib means on said outer wall extending inwardly; therefrom; the container including an upper container portion which curves upwardly and inwardly and is provided with an upwardly tapered and inwardly facing flange, the flange having a terminal edge defining a filling opening for the container, the upper container portion merging with a neck portion to definean annular locking'bead; theflange being. received within the annular cavityandubein'g suflflciently flexible so as to conform to the contour of the bight portion, the terminal edgelabutting the shoulder on the inner wall, and the locking rib means being snapped over the annular locking bead. I
With the above and other objects in view thatwill hereinafter appear, the nature of the invention will be more clearly'understood by reference to the following detailed. descrip tion,'the appended claimed subject matter and the several views illustrated in the accompanying drawings. n v
Inthe drawings: f FIGURE 1 is afragmentary perspective view which illustrates one form of container assembly embodying the present invention. n I
' FIGURE 2 is an enlarged vertical cross-sectional exploded-view which illustrates the closure member and container of FIGURE 1 prior to the assembly thereof.
-FIGURE 3 is an enlarged vertical cross-sectional view, taken on line 3-3 of FIGURE 1, and illustrates the closlire member and container subsequent to assembly there- 0 I FIGURE 4 is a fragmentary perspective view which illustrates another form of container assembly embodying the present invention. p
FIGURE 5 is an enlarged vertical cross-sectional exploded view which illustrates the closure member and container of FIGURE 4 prior to the assembly thereof.
, FIGURE 6 is an enlarged vertical cross-sectional view, taken on line 66 of FIGURE 4, and illustrates the clo- Sll' member and container subsequent to assembly there- 0 Referring to the drawings in detail, there is illustrated in FIGURE 1 a container assembly, generally indicated by the numeral 10, which container assembly 10 includes a snap-on closure member 11 and a container 12. The closure member 11 and the container 12 are each formed of conventional thermoplastic material by well known injection molding or blow molding processes.
The closure member 11 includes a center panel 13 which is spaced above a chuck panel 14 and is connected thereto by an angularly disposed first panel step 15. An inner wall 16 extends outwardly and upwardly from the chuck panel 14 and is spaced inwardly from an outer wall 17 by an arcuate bight portion 18. As is apparent in FIG- URE 2, the inner wall 16 and the outer wall 17 are spaced by the bight portion 18 so as to define an annular cavity 19. The inner wall 16 is provided with a thickened portion 20 which extends into the annular cavity 19 to form an upwardly and outwardly facing stop shoulder 21 adjacent to the bight portion 18.
A locking rib 22 is formed on the outer wall 17 and extends inwardly therefrom toward the inner wall 16. The locking rib 22 is preferably formed as an annular rib but may also be formed by a plurality of small nibs or protrusions (not shown).
A tab 23 is integrally formed on the outer wall 17, as is best shown'in FIGURE 1, for aiding in the removal of the closure member 11 from the container 12. Also shown in FIGURE 1 is a pair of score lines 24 which are formed in the outer wall 17 to define a tear strip 25 connected to the tab 23. A reinforcing head 26 is disposed adjacent the innermost ends of the score lines 24 so as to provide a thick cross section in order to stop tear action along the score lines 24 and thereby preserve the closure member 11 substantially intact and capable of reclosing the container 12.
The container 12, as is best illustrated in FIGURE 2, includes a tubular container body 30, a neck portion 31 and an upper container portion, generally indicated by the numeral 32. The upper container portion 32 curves upwardly and inwardly, as at 33, and is provided with an upwardly tapered and inwardly facing flexible flange 34. The flexible flange 34 has a terminal edge 35 which defines a large mouth or filling opening 36 for the container 12.
The upper container portion 32 merges with the neck portion 31 and is offset outwardly therefrom to define an annular locking head 37. The locking bead 37 includes an outwardly and downwardly facing surface 38 which extends circumferentially about the container 12.
It is apparent, from a consideration of FIGURESZ and 3, that during assembly of the snap-on closure member 11 and the container 12, the center panel 13 and chuck panel 14 are initially disposed within the mouth or filling opening 36 such that the terminal edge 35, of the flexible flange 34, is engaged by the inner wall 16. As the, closure member 11 is forced onto the container 12, the upper container portion 32 is forced past the locking rib 22 and is deformed so as to fit into the annular cavity 19 and conform to the contour of the bight portion 18. With the closure member 11 firmly seated on the "container 12, the locking rib 22 is snugly engaged with the surface 38 of the annular locking head 37. The terminal edge 35, of the upper container portion 32, is compressed against the shoulder 21, on the inner wall 16, and a tight seal is provided between the flexible fiange 34 and the bight portion 18. The tightness of the seal results not only from the large area of contact between the upper container portion 32, with the outer wall 17 and bight portion 18, but also because of the tendency for the flex- L and outer wall are connected together by a bight portion 56 and spaced so as to provide an annular cavity 57 'therebetween. The inner wall 54 depends from the center panel 53 and is connected thereto adjacent the bight portion 56. A stop shoulder 58 is preferably provided on the inner wall 54 in underlying relation to the bight portion 56. The shoulder 58 faces upwardly and outwardly from the inner wall 54 and intersects the bight portion 56 substantially normal thereto.
The closure member 51 is provided with an internal '.screw thread 60 on the insid of Ill; outer wall 55 to provide means for locking the closure member 51 onto the container 52. A plurality of quadrant projections 61 are formed on the center panel 53 and extend upwardly therefrom in spaced relation so as to define a pair of diametrical slots 62 for receiving a leverage tool (not shown) for tightening or loosening the closure member 51 on the container 52. The width of the slots 62 is suitably designed to match that of a mixing stick (not shown), for paint and the like, which mixing stick is an ideally suited leverage tool for tightening and loosening the closure member 51.
The container 52 is quite similar to the container 12 and includes a tubular container body 70, a neck portion 71 and an upper container portion, generally indicaed by the numeral 72. The upper container portion 72 curves upwardly and inwardly, as at 73, and is provided with an inwardly facing flexible flange 74. The flexible flange 74 has a terminal edge 75 which defines a large mouth or filling opening 76 for the container 52.
The upper container portion 72 merges with the neck portion 71 upon which is provided a helical screw thread 77 for cooperating with the screw thread 60 to lock the closure member 5 1.up0n the container 52.
It is apparent from a consideration of FIGURES 5 and 6, that during assembly of the closure member 51 and the container 52, the center panel 53 and inner wall 54 close the filling opening 76. As the closure member 51 is screwed onto the container 52, the upper container portion 72 is moved into the annular cavity 57 such that the flexible flange 74 is deformed so as to conform to the configuration of the bight portion 56. When the closure member 51 is tightened down on the container 52, the terminal edge 75 bears against the stop shoulder 58 and improves the tight seal between the flexible flange 74 and the the bight portion 56. The tightness of the seal results not only from the large area of contact between the upper container portion 72, with the outer wall 55 and bight portion 56, but also because of the tendency for the flexible flange 74 to return from the deformed configuration, as is shown in FIGURE 6, to the unstressed configuration which is shown in FIGURE 5.
It is apparent from the foregoing detailed description that there has been disclosed various types of containers and closure members which are particularly adapted for holding various liquids such that no leakage will occur. The inturned flexible flanges 34 and 74 not only provide for forming a liquid-tight seal but, when the containers are used to package paints or lacquers, the terminal edges 35 and 75 thereon provide a very effective edge for efficient scraping of a paint brush or the like.
While a preferred form and arrangement of parts has been shown in illustrating the invention, it is to be clearly understood that various changes in details and arrangement of parts may be made without departing from the spirit and scope of the invention as defined in the appended claimed subject matter.
1. An assembly comprising a closure memberformed of flexible material and a container formed of flexible material, said closure member comprising a central panel, an inner wall, an outer wall spaced outwardly from said inner wall and connected thereto by a bight portion to define an annular cavity, an upwardlv and outwardly facing shoulder formed on said inner wall and underlying said bight portion, locking rib means on said outer wall extending inwardly therefrom, said annular cavity being defined by an arcuate surface between said locking rib means and said shoulder, said arcuate surface being of a predetermined distance as measured thereal-ong in an axial plane taken through said closure member, said container including an upper container portion which curves upwardly and inwardly and is provided with an upwardly tapered and inwardly facing flange, said flange having a terminal edge defining a filling opening for said container, said upper container portion merging with a neck portion having locking means thereon, the distance between said locking means and said terminal edge being substantially equal to said predetermined distance as measured thereal-ong in an axial plane taken through said container, said flange being received within said annular cavity and being sufiiciently flexible so as to conform to the contour of said bight portion, said terminal edge being in abutting seating relationship with said shoulder on said inner wall, and said locking rib means cooperating with the locking means on said neck portion such that said flange and said bight portion provide a seal between said container and said closure member.
2. The assembly as defined in claim 1 including another bight portion opening in opposed relationship to said first-mentioned bight portion for connecting said inner wall to said central panel, said inner wall being progressively reduced in thickness from said shoulder toward said second bight portion, a tab provided onsaid outer wall, and at least one score line formed in said outer wall to facilitate the rupturing of said outer wall and the subsequent removal of said closure member from said container.
3. The assembly as defined in claim 1 wherein a tab is provided on said outer wall, and at least one score line is formed in said outer Wall to facilitate the rupture of said outer wall incident to the removal of said closure member from said container.
4. The assembly as defined in claim 1 including another bight portion opening in opposed relationship to said first bight portion and connecting said inner wall to said central panel, said central panel being disposed in a plane generally normal to the axis of said closure member and between planes taken through said first-mentioned and another bight portion, said inner wall being progressively reduced in thickness from said shoulder toward said second bight portion, a tab provided on said outer Wall, and a pair of weakened lines formed in said outer wall adjacent said tab to facilitate the rupturing of said outer wall and the subsequent removal of said closure member from said container.
References Cited by the Examiner UNITED STATES PATENTS 1,351,304 8/ 1920 Shelton 215-46 2,833,324 5/1958 Burroughs 220 2,991,902 7/ 1961 Lind -.5 3,032,226 5/ 1962 Terwilliger 21541 3,074,579 1/ 1963 Miller 215-43 3,116,846 1/ 1964 Salrninen 21541 3,189,071 '6/ 1965 Balkema et al. 21541 3,216,610 11/1965 Klygis 150-.5
JOSEPH R. LECLAIR, Primary Examiner.