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Publication numberUS3232470 A
Publication typeGrant
Publication dateFeb 1, 1966
Filing dateMay 26, 1964
Priority dateMay 26, 1964
Publication numberUS 3232470 A, US 3232470A, US-A-3232470, US3232470 A, US3232470A
InventorsRoyal H Gibson
Original AssigneeGibson Ass Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Double seal linerless cap for containers
US 3232470 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

Feb. 1, 1966 R. H. GIBSON 3,232,470

DOUBLE SEAL LINERLESS CAP FOR CONTAINERS Filed May 26. 1964 14 1 Z A I 7 AT TO EYS.

United States Patent Office 3,232,470 Patented Feb. 1, 1966 3,232,470 DOUBLE SEAL LINERLESS CAP FOR CONTAINERS Royal H. Gibson, Rumson, N.J., assignor to Gibson Associates Incorporated, Cranford, NJ. Filed May 26, 1964, Ser. No. 370,207 3 Claims. (Cl. 215-43) This application is filed as a continuation in part of my copending application Serial No. 309,776, now abandoned, filed September 18, 1963.

This invention relates to a double seal linerless cap for containers.

It is an object of the invention to provide a cap having two separate annular sealing elements so arranged as to engage and seal against two separate areas of the rim of a container neck to thereby provide a double seal.

It is a further object of the invention to provide a cap of the above type in which the sealing elements are adapted to engage and seal against separate areas of the rims of container necks of varying configurations.

Other objects and advantages of the invention will appear hereinafter.

A preferred embodiment of the invention selected for purposes of illustration is shown in the accompanying drawings, in which,

FIG. 1 is a vertical sectional view of a cap embodying the invention on the line 1-1 of FIG. 2.

FIG. 2 is a horizontal section on the line 2-2 of FIG. 1. 7

FIG. 3 is a vertical section showing the cap as applied to a container in which the rim of the container neck is flat.

FIG. 4 is a vertical section showing the cap as applied to a container in which the rim of the container is chamfered.

FIG. 5 is a vertical section of .a modified form of cap.

FIG. 6 is a vertical section showing the modified form of cap as applied to a container in which the rim of the container is chamfered.

Container caps embodying the invention are preferably molded from plastic material which is flexible, resilient and elastic. I prefer to use polypropylene for this purpose because of its strength and durability, but other materials having similar properties may be used.

Referring to FIGS. 1 to 4, the cap comprises a top 1 and an integral depending cylindrical skirt 2, the inner surface of which may be provided with threads 3 adapted to engage threads 4 on the outer surface of the neck 5 of a container 6.

The container may be of any desired size and shape and may be made of plastic, glass, metal or other suitable material.

Depending from the bottom surface of the top 1 and spaced inwardly from the skirt 2 is an annular ring of inverted Y shape, with the stem 7 of the Y defining a rib extending downwardly from the under surface of the top 1. The lower portion of the ring below the rib 7 is split to provide two diverging sealing elements or flanges 8 and 9 constituting the arms of the Y.

The rib 7 is short and of substantial transverse thickness to resist transverse deflection when the cap is tightened on the neck of the container. Preferably the transverse thickness of the rib is greater than its height and the inner and outer surfaces of the rib above the sealing elements are preferably concentric, cylindrical surfaces. As shown in the drawings, the rib 7 of the annular Y-shaped ring is disposed between the rim of the container and the top wall 1 of the cap with the mean diameter of the rib 7 falling between the inner and the outer diameter of the rim of the container.

The innersealing element "8 extends downwardly and inwardly beyo'hd the inner surface of the rib and the outer sealing element 9 projects downwardly and outwardly beyond the outer surface of the rib. Preferably the inner sealing element 8 is somewhat longer than the outer sealing "element 9, particularly when the cap is intended for use v with a container neck having a chamfered rim as shown in FIG. 4.

The modified form of cap shown in FIGS. 5 and 6 is generally similar to that of FIGS. 1 through 4, except that the sealinlgelements 8 and 9 are spaced by a short, horizontal surface or land 10, instead of meeting in an inverted V-shapled notch as shown in transverse crosssection in FIG.---1. The modified form of cap is particularly well adapted for use with container necks having a chamfered rim of the type shown in FIG. 6.

When used iinconnection with a container neck having a flat rim as shown in FIG. 3, as the cap is screwed down and tightened I, the container neck, the sealing element 9 engages an :area of the flat surface of the rim and is forced outwardly and upwardly to form a tight seal. At the same time; the sealing element 8 engages the inner corner of the rim and the marginal area of the flat surface of the rim and is forced inwardly and upwardly to form a second tight seal.

When used injconnection with a container neck having a chamfere drim as in FIG. 4 or FIG. 6, the sealing element 9 again engages an area of the flat surface of the rim and is "forced outwardly and upwardly to form a tight seal. At "the same time, the sealing element 8 engages an area of the chamfered surface of the rim and is forced inwardly and upwardly to form a second tight seal.

The container necks shown in FIGS. 3, 4 and 6 are merely illustrative of typical container necks with which the caps of thisi 'cinvention may be used, and it will be understood that such caps may also be used with container necks having rims of other conformations.

It will be understood that the invention may be variously modified and embodied within the scope of the subjoined claims.

I claim as my. invention:

1. A double s' eal, linerless cap for externally threaded containers having an annular rim of substantial width at the mouth thereof, said cap having a top wall and an outer cylindrical skirt depending therefrom, the inside wall of said cylindrical skirt being threaded to engage with the threads on the container, an annular rib depending from the underside of the top of said cap concentric with and spaced radially inwardly from said skirt, said rib being of substantial transverse thickness preventing transverse deflection thereof when the cap is tightened on said container neck, a pair of concentric sealing flanges formed on the lower portion of said rib and having a generally inverted V-shaped configuration as viewed in transverse cross-section, one of said sealing flanges extending downwardly and laterally outwardly beyond the outer surface of the rib, the other of said sealing flanges extending downwardly and laterally inwardly beyond the inner surface of the rib, the mean diameter of said rib falling between the inner and the outer diameter of the rim of said container, said sealing flanges being adapted to engage and seal against only said container rirn, whereby, as said cap is tightened on said container, said one sealing flange is forced outwardly and upwardly by said container rim forming therewith an outer seal and said other sealing flange is forced inwardly and upwardly by said container rim forming therewith an inner seal.

3 I 4; 2. A glouble seal, linerless cap for containers as claimed References Cited by the Examiner in claim 1 in which the transverse thickness of the rib UNITED STATES PATENTS is greater than its height.

3,069,040 12/1962 Corsette 2l541 3. A double seal, linerless cap for containers as claimed in claim 1 in which the inner and outer surfaces of the 5 I rib above the sealing flanges are concentric, cylindrical JOSEPH LECLAIR P'mmry Exammer' surfaces. FRANKLIN T. GARRETT, Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3069040 *Aug 15, 1961Dec 18, 1962Drackett CoContainer closure
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3370732 *Feb 16, 1967Feb 27, 1968Polytop CorpCap seal
US3435975 *Oct 30, 1967Apr 1, 1969Tamper Proof Tops Ind LtdSafety closure
US3568871 *May 12, 1969Mar 9, 1971Jay G LivingstoneClosure cap
US3741424 *Sep 27, 1971Jun 26, 1973Eyelet Specialty CoBottle closure
US3802590 *May 22, 1972Apr 9, 1974Bernardin IncLinerless container closure
US3913770 *Sep 7, 1973Oct 21, 1975Tarro Richard EDrinking container
US4089463 *Jan 14, 1977May 16, 1978Societe Nouvelle De Bouchons Plastiques S.N.B.P.Screw caps
US4091948 *Aug 12, 1976May 30, 1978Northup John DLinerless container closure
US4122965 *Jul 7, 1977Oct 31, 1978Kerr Glass Manufacturing CorporationLinerless closure
US4143785 *Mar 16, 1978Mar 13, 1979Sun Coast Plastic Closures, Inc.Plastic vacuum sealing cap
US4248356 *Jan 2, 1979Feb 3, 1981Aci Technical Centre Pty. Ltd.Sealing method
US4276989 *Oct 31, 1979Jul 7, 1981Hicks David MClosures
US4351443 *May 15, 1981Sep 28, 1982Uhlig Gerhardt EDual liquid tight closures
US4439875 *Jun 2, 1981Apr 3, 1984Sanitation Equipment LimitedToilet
US4494664 *Feb 28, 1983Jan 22, 1985Angelo Guala, S.P.A.Tamper evident closure
US4658976 *Jan 4, 1985Apr 21, 1987Aluminum Company Of AmericaLined plastic closure
US4683016 *Sep 3, 1985Jul 28, 1987Sun Coast Plastics, Inc.Flexible foil sealing disk, linerless screw threaded closure cap
US4709825 *Sep 15, 1982Dec 1, 1987Owens-Illinois Closure Inc.Press-on twist-off closure for container
US4723677 *Jul 21, 1986Feb 9, 1988Nagel Jr James HContainer cap with connector tabs
US4905852 *May 26, 1989Mar 6, 1990Zapata Industries, Inc.For a bottle
US5101993 *May 10, 1990Apr 7, 1992Phoenix Closures, Inc.Closure seal
US5320236 *Feb 17, 1993Jun 14, 1994Owens-Illinois Closure Inc.Plastic container package with linerless sealing closure system
US5385252 *Jun 26, 1992Jan 31, 1995Hidding; Walter E.Closure
US6003701 *Feb 4, 1998Dec 21, 1999Hidding; Walter E.Tamper resistant bottle cap and neck
US6325228 *Sep 2, 1999Dec 4, 2001Closures And Packaging Services LimitedLinerless closure for carbonated beverage container
US6805252Nov 6, 2001Oct 19, 2004Closures And Packaging Services LimitedContainer and linerless closure combination
US7431877Oct 4, 2004Oct 7, 2008Closures And Packaging Services LimitedLinerless closure for carbonated beverage container
US20120273452 *Jan 6, 2011Nov 1, 2012Soehnlen Daniel PCombined lip and shoulder seal for threaded cap
EP0140655A2 *Oct 18, 1984May 8, 1985Cmb Packaging (Uk) LimitedOne-piece plastics closure
WO1979000774A1 *Mar 12, 1979Oct 4, 1979Suncoast Plastic ClosuresPlastic vacuum sealing cap
Classifications
U.S. Classification215/344, 215/354, 215/329, 215/DIG.100
International ClassificationB65D41/04
Cooperative ClassificationB65D41/0428, Y10S215/01
European ClassificationB65D41/04B2