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Publication numberUS3074579 A
Publication typeGrant
Publication dateJan 22, 1963
Filing dateJan 15, 1960
Priority dateJan 15, 1960
Publication numberUS 3074579 A, US 3074579A, US-A-3074579, US3074579 A, US3074579A
InventorsChristian F Miller
Original AssigneeFormold Plastics Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Combination closure cap and stopper
US 3074579 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Jan. 22, 1963 C. F. MILLER COMBINATION CLOSURE CAP AND STOPPER Filed Jan. 15, 1960 United States Patent 3,074,579 COMBINATION CLOSURE CAP A ND STOPPER Christian F. Miller, Chicago, Ill., asslgnpr to Fqrmpld Plastics, Inc., Blue Island, Ill., a corporation of llllnols Filed Jan. 15, 1960, Ser. No. 2,716 2 Claims. (Cl. 21541) This invention relates generally to closure caps for bottles and other necked containers and especially to a combination closure cap and stopper.

Numerous closures have been devised for bottles and similar necked containers. Variously arranged caps have been employed in certain situations while stoppers have been used in others. Atttempts have also been made to form a closure cap with an integral stopper in order to increase the sealing efficiency of the resultant unit.

In one conventional type of combined closure cap and stopper, a threaded cap is used to drive a tapered, integral stopper into the neck of a bottle. However, tight engagement of such a stopper frequently causes the top of the cap to bulge in an unsightly manner; and the presence of such a bulge has led many consumers to question the quality of products thus contained.

In another conventional type of combined closure cap and stopper, a stopper element having cylindrical sidewalls is incorporated; and the sealing efficiency of a closure so arranged has been found to be dependent upon obtaining a press fit of the stopper in the bottle neck. Manufacturers of glass bottles, in particular, do not maintain close tolerances on the inside diameter of the bottle neck; and even under special circumstances, a tolerance of as much as 0.010 inch has been observed. It will be recognized that such dimensional variations seriously effect the efficiency of the seal which can be secured and maintained by the prior art closure cap and stopper combinations incorporating a cylindrical stopper.

Accordingly, an important object of the present invention is to provide a new and improved closure cap which overcomes the limitations of the prior art by being more adaptable to dimensional variations in the neck of the container.

Another object of the invention is to provide a combined closure cap and stopper which possesses little tendency to bulge the top of the cap when the stopper engages the inside of the neck of a container.

Yet another object of the invention is to provide a closure cap which displays improved sealing efliciency.

A further object of the invention is to provide a closure cap which is resistant to being popped out by expansion of the contained product.

Additional objects and features of the invention pertain to the particular structure and arrangements whereby the above objects are attained.

A structure in accord with the invention includes cup means adapted to engage the exterior surface of the neck of a bottle, skirt means disposed concentrically within the cup means and having a bearing portion adapted to engage the interior surface of the neck resiliently, and a frusto-conical collar joined between the cup means and the skirt means so as to define a tapering, annular relief at the juncture of the collar and the cup means.

The invention, both to its structure and mode of operation, will be better understood by reference to the following disclosure and drawing forming a part thereof wherein:

FIG. 1 is a perspective view of a bottle closured by means of a cap constructed in accordance with the present invention;

FIG. 2 is an enlarged view taken through the section 22 of FIG. 1;

FIG. 3 is a fragmentary, further enlarged view of the bottle and cap of FIG. 1, showing the skirt means entering the neck of the bottle; and

3,074,579 Patented Jan. 22, 1963 FIG. 4 is a fragmentary, cross-sectional view similar to the showing of FIG. 3, illustrating the cap completely closuring the bottle.

One important use of the closure cap of the invention is in the art of glass bottles; and hereinafter, such art will be used for purposes of explanation and illustration with out intending to limit the application and uses of the invention in any way. It is to be recognized that the closure cap of the invention may be equally well used with plastic bottles, necked metal containers and other similar receptacles.

Referring now in detail to the drawing wherein a single embodiment of the invention is shown, a closure cap indicated generally at 10 will be seen closing off the neck 12 of a glass bottle illustrated generally at 14.

The closure cap 10 includes a cup made up of a disc 16 and a cylindrical wall 18 fixed to the edge of the disc. The interior of wall 18 may be provided with threads 20 for engaging cooperating threads 22 provided on the exterior surface of the neck 12.

The closure cap 10 also includes a flexible skirt 24 which is connected to the disc 16 by a frusto-conical collar 26. Skirt 24 is arranged concentrically within and spacedapart from the cylindrical wall 18 in order that a cylindrical bearing portion 28 can engage the interior surface of the neck 1'2.

In accordance with a feature of the invention, the diameter of the bearing portion 28 is arranged to exceed the internal diameter of the neck 12. Accordingly, it has proved advantageous to incorporate a bevel 30 at the free end of skirt 124 for leading the skirt into the neck 12. As will be recognized, the skirt 24 is radially compressed by entering into the neck 12.

As is shown in the several figures, the innermost surfaces of skirt 24 and collar 26 are arranged to exceed, in total area, the surface of bevel 30. Accordingly, product expansions occasioned, as for example by exposure to elevated temperatures, tend to force the bearing portion 28 more tightly against the interior surface of neck 12. The closure cap 10 is thus rendered resistant to being popped out or off by such product expansions.

In accordance with a further feature of the invention, the collar 26 is arranged to be frusto-conical in shape and is directed to possess a major diameter which coincides with the diameter of skirt 24 so as to define a tapering, annular relief 32 at the juncture of disc 16 and collar 26. The relief 32 cooperates in rendering the skirt 24 flexible for ready entrance into the neck 12 and for resilient engagement therewith.

It has also proved advantageous to include one or more annular sealing ribs 34 concentrically on the disc 16 between wall 18 and skirt 24. The ribs 34 are appropriately arranged to abut the end surface 36 of neck 12 when the closure cap 10 completely closures the bottle .14. Ribs 34 may take triangular cross-sectional shape, as shown, or any other advantageous shape.

The desired flexibility of the closure cap of the invention has been found to be enhanced by fabricating the unit from a resiliently deformable, resinous plastic material, such as for example high-pressure process polyethylene. However, other polyolefins, nylon and other similarly flexible-materials may also be employed. When such materials are used, the closure cap of the invention can be readily formed in an integral unit by molding.

Having thus described one construction of the invention, it is important now to state how the illustrated embodiment operates. Referring first to FIG. 3, it will be seen that, when the cap 10 is placed over the neck 12, the bevel 30 of skirt 24 will readily enter the neck 12. Then as the threads 20 are directed into engagement with the threads 22, the skirt 24 will be led into the neck 12.

Eventually, the bearing portion 28 will engage the interior surface of the neck 12; and since the skirt 24 is of greater diameter than the inside diameter of neck 12, the bearing portion 28 will wedgedly engage the interior surface of neck 12. It is important to point out that the flexure occasioned by the provision of collar 26 permits skirt 24 to engage the neck 12 resiliently and thereby effectively to seal bottles whose inside neck diameter varies slightly from a standard dimension. Thus, the seal afforded by cap 10 is not seriously eilected by variations in the inside diameter of the neck 12. As will be recognized, the resiliency of skirt 24 also tends to compensate for any out-of-roundness of the interior of neck 12.

After the bearing portion 28 has been led into engagement with the interior surface of the neck 12, continued turning of the cap 10 will finally result in ribs 34 engaging the end surface 36 of neck 12. This arrangement is illustrated in HG. 4 which also shows the engagement of bearing portion 28 and neck 12 in solid outline and the normal disposition of skirt 24 in broken outline.

Due to the resilient nature of the material from which the cap 10 is fabricated, the closing torque employed in aifixing the closure cap 10 will result in slight axial compression of the ribs 24 and concomitant distortion in order to attain additional sealing properties.

The specific example herein shown and described is i1- lustrative only. Various changes in structure will, no doubt, occur to those skilled in the art; and these changes are to be understood as forming a part of this invention insofar as they fall within the spirit and scope of the appended claims. I

The invention is claimed as follows:

1. A closure cap comprising: cup means adapted to receive the discharge end of a necked container including a disc and an annular wall fixed to the disc; flexible skirt means depending from said cup means and spaced radially inwardly of and disposed concentrically with said annular wall; said skirt means including a generally cylindrical bearing portion initially of greater outside diameter than the inside diameter of the neck of the container and connected to the disc by a collar portion merging into said disc at an acute angle facing outwardly and having a major diameter which coincides with a diameter of said bearing portion to define a tapering annular relief between said bearing portion and said disc; said generally cylindrical bearing portion terminating in a relieved free end portion facilitating entry of the skirt means into the neck of the container with the bearing portion engaging the neck of the container throughout an annular area of contact of substantial vertical extent; and annular rib means raised from said disc and disposed concentrically between said annular wall and said skirt means for sealingly abutting the end surface of said container, said disc cooperating with said collar portion to define force-transmitting means acting between said rib means and throughout the annular area of contact between the neck of the container and said bearing portion whereby forces acting between said end surface and said rib means end radially to expand said bearing portion against said neck throughout the said annular area of contact and forces acting between said bearing portion and said neck tend to urge said rib means against said end surface.

2. A closure cap as claimed in claim 1, wherein said cup means, said skirt means and said rib means are formed as an integral unit from a resiliently deformable resinous plastic material.

References (lited in the file of this patent FOREIGN PATENTS 1,030,600 France June 15, 1953 534,395 Italy Oct. 14, 1955 782,574 Great Britain a- Sept. 11, 1957

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
FR1030600A * Title not available
GB782574A * Title not available
IT534395B * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3164278 *Jul 23, 1963Jan 5, 1965Hardy LohrerStopper for closing containers, such as bottles, flasks and the like
US3187582 *Nov 16, 1961Jun 8, 1965Robertshaw Controls CoTransparent instrument case closure
US3193340 *May 18, 1964Jul 6, 1965Gen Motors CorpVenting arrangement for a domestic appliance
US3215297 *Mar 25, 1964Nov 2, 1965Anchor Hocking Glass CorpClosure cap
US3298415 *Apr 7, 1964Jan 17, 1967Continental Can CoClosures for large mouth containers
US3360149 *Dec 22, 1965Dec 26, 1967Robert A RothCap construction
US3366320 *Jul 21, 1965Jan 30, 1968Atomic Energy Commission UsaCentrifuge sample holder
US3532244 *Jan 17, 1969Oct 6, 1970Growth Int Ind CorpSeal for resealable bucket closure
US3568871 *May 12, 1969Mar 9, 1971Jay G LivingstoneClosure cap
US3595417 *May 13, 1969Jul 27, 1971Musher Arthur AlbertSafety closure
US3693847 *Jan 6, 1971Sep 26, 1972Royal H GibsonBottle cap and pouring fitment assembly
US3815771 *Jun 7, 1972Jun 11, 1974Anchor Cap & Closure CorpLinerless closure cap
US3844439 *Jul 28, 1972Oct 29, 1974Consumers Glass Co LtdLinerless closures
US3888373 *Aug 15, 1973Jun 10, 1975Sunbeam Plastics CorpChild-resistant closure
US3900122 *Jul 16, 1973Aug 19, 1975Dichter Hans JoachimContainers with stoppers
US3944104 *Nov 25, 1974Mar 16, 1976Consumers Glass Company LimitedThreaded wine bottle stopper
US4090630 *Dec 30, 1976May 23, 1978Walter Wiedmer PlastikformContainer closure
US4090631 *Jan 31, 1977May 23, 1978Jean GrussenScrew-type bottle cap having improved sealing properties
US4122965 *Jul 7, 1977Oct 31, 1978Kerr Glass Manufacturing CorporationLinerless closure
US4124988 *Oct 18, 1976Nov 14, 1978Oil States Rubber Co.Seal assembly for hollow tubular structure
US4200196 *Oct 23, 1978Apr 29, 1980Bashour Joseph EBottle top closure
US4222974 *Nov 21, 1978Sep 16, 1980Phillips Petroleum CompanyMethod of making hermetically sealed container with frangible seal
US4231480 *Jan 2, 1979Nov 4, 1980Anspack, Inc.Threaded bottle lid
US4276989 *Oct 31, 1979Jul 7, 1981Hicks David MClosures
US4303101 *Apr 14, 1980Dec 1, 1981Tholen James WEnd plug assembly for sewer pipe
US4322012 *May 9, 1980Mar 30, 1982Dairy Cap CorporationThreaded plastic bottle cap
US4360114 *Nov 16, 1981Nov 23, 1982Thoroughbred Plastics Corp.Linerless bottle cap
US4487228 *Dec 19, 1983Dec 11, 1984Shell Oil CompanyWeather-resistant and self-draining thread protector
US4566603 *Jul 12, 1984Jan 28, 1986Phoenix Closures, Inc.Linerless closure
US4793505 *Jan 28, 1983Dec 27, 1988Tbl Development CorporationTamper-indicating container closure with rupturable disk
US4809752 *Apr 30, 1987Mar 7, 1989Wilhelm Strodter Maschinen- Und ApparatebauThread protector for screw threads, made of a deformable material with a complementary thread
US4844273 *Sep 6, 1988Jul 4, 1989Sunbeam Plastics CorporationClosure with enhanced sealing
US4856668 *Feb 14, 1989Aug 15, 1989Pfefferkorn & Co. GmbhBottle closure for champagne bottle and the like having threaded mouths
US5101993 *May 10, 1990Apr 7, 1992Phoenix Closures, Inc.Closure seal
US5275287 *Mar 26, 1993Jan 4, 1994Mcg Closures Ltd.Closures
US5297688 *Dec 17, 1992Mar 29, 1994Creative Packaging Corp.Closure for sealing a container rim
US5383558 *Sep 11, 1992Jan 24, 1995Kraft General Foods, Inc.Sealed container
US5586671 *Feb 23, 1996Dec 24, 1996The Procter & Gamble CompanyChild resistant package
US5762218 *Oct 5, 1995Jun 9, 1998Franz RossbergPlastic closure retained by snapping over bottle neck bead
US5931323 *Dec 20, 1994Aug 3, 1999Kraft Foods, Inc.Sealed container
US5988923 *Dec 30, 1997Nov 23, 1999Toppan Printing Co, LtdCoating container
US6126027 *Aug 21, 1997Oct 3, 2000Mcg Closures LimitedSelf-centering container closure
US6257432Dec 29, 1999Jul 10, 2001Phoenix Closures, Inc.Cap and container assembly
US6260722Mar 21, 2000Jul 17, 2001Phoenix Closures, Inc.Cap and container assembly
US6260723 *Oct 1, 1997Jul 17, 2001Tetra-Laval Holdings & FinancePackage for flowable media having a snap lid and preform for making same
US6843389 *Jul 19, 2002Jan 18, 2005Rieke CorporationSealing mechanisms for use in liquid-storage containers
US6889857Feb 1, 2002May 10, 2005Rexam Medical Packaging Inc.Sealing arrangement for a closure for a fitment
US6997354 *Feb 13, 2003Feb 14, 2006Rieke CorporationSealing mechanisms for use in liquid-storage containers
US7055710 *Nov 20, 2001Jun 6, 2006Beeson And Sons LimitedPlug seals for user-friendly cap assemblies
US7216779Aug 24, 2004May 15, 2007Rieke CorporationSealing mechanisms for use in liquid-storage containers
US7469721 *Aug 25, 2004Dec 30, 2008Sumitomo Metal Industries, Ltd.Thread protector for a pipe
US7588155 *May 3, 2002Sep 15, 2009Berry Plastics CorporationBeverage container closure
US7677423Feb 14, 2006Mar 16, 2010Rieke CorporationSealing mechanisms for use in liquid-storage containers
US8267259 *Apr 14, 2010Sep 18, 2012Wunderwall, LLCCup for holding bottles in a bottle rack
US8365934 *Sep 26, 2008Feb 5, 2013Nihon Yamamura Glass Co., Ltd.Synthetic resin cap
US20020162818 *May 3, 2002Nov 7, 2002Williams Charles L.Beverage container closure
US20030146185 *Feb 1, 2002Aug 7, 2003Francois James A.Sealing arrangement for a closure for a fitment
US20040011813 *Feb 13, 2003Jan 22, 2004Kasting Thomas P.Sealing mechanisms for use in liquid-storage containers
US20040026450 *Apr 21, 2003Feb 12, 2004Rohr Robert D.Container for holding a product
US20040035818 *Nov 20, 2001Feb 26, 2004King Roger MilnerPlug seals for user-friendly cap assemblies
US20050023293 *Aug 24, 2004Feb 3, 2005Kasting Thomas P.Sealing mechanisms for use in liquid-storage containers
US20050043149 *Oct 31, 2002Feb 24, 2005Mckenzie Noel RobertsonExercise device to prevent dvt
US20050194343 *May 13, 2004Sep 8, 2005Drug Plastics & Glass Company, Inc.Closure with linerless seal
US20060042709 *Aug 25, 2004Mar 2, 2006Takahiro TakanoThread protector for a pipe
US20060201977 *Feb 14, 2006Sep 14, 2006Rieke CorporationSealing mechanisms for use in liquid-storage containers
US20060278653 *Jun 8, 2005Dec 14, 2006Zeyfang Frederick WCenter pull tab plug with sealing flange
US20060289570 *Mar 2, 2006Dec 28, 2006Rohr Robert DContainer for holding a product
US20070175853 *Dec 10, 2004Aug 2, 2007Markus KebbenSealing cap
US20100147864 *Jul 21, 2005Jun 17, 2010Reckitt Benckiser Healthcare (Uk) LimitedPackaging with sealing lid and methods for filling the package
US20100258698 *Apr 14, 2010Oct 14, 2010Wunderwall, LLCCup for holding bottles in a bottle rack
US20100276387 *Sep 26, 2008Nov 4, 2010Hiroshi HamanaSynthetic resin cap
US20110062159 *Sep 11, 2009Mar 17, 2011Ajit KhubaniBeverage container closure with pressure release
US20110098614 *Dec 7, 2010Apr 28, 2011Mckenzie Noel RobertsonMethod for treating, preventing or ameliorating dvt
US20130276413 *Dec 21, 2011Oct 24, 2013Manfred Imand KurmisSealing assembly for a closure
US20160039585 *Aug 11, 2015Feb 11, 2016Universal Moulding Co., Ltd.Pipe thread protector with an inner tapered groove
USD613599Sep 11, 2009Apr 13, 2010Telebrands Corp.Beverage container closure with pressure release
DE2236528A1 *Jul 21, 1972Jan 31, 1974Dichter Hans JoachimGlasbehaelter mit verschlusstopfen
EP0311693A1 *Apr 21, 1988Apr 19, 1989Japan Crown Cork Co. Ltd.Plastic cap
EP0311693A4 *Apr 21, 1988Jun 5, 1990Crown Cork JapanPlastic cap.
WO2010099566A1 *Mar 2, 2010Sep 10, 2010Manfred Imand KurmisA sealing member for a closure
U.S. Classification215/344, 215/354, 138/96.00T, 215/DIG.100
International ClassificationB65D41/04
Cooperative ClassificationB65D41/0421, Y10S215/01
European ClassificationB65D41/04B1A