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Publication numberUS2168734 A
Publication typeGrant
Publication dateAug 8, 1939
Filing dateFeb 1, 1938
Priority dateFeb 10, 1937
Publication numberUS 2168734 A, US 2168734A, US-A-2168734, US2168734 A, US2168734A
InventorsSimon Freeman William
Original AssigneeSimon Freeman William
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Stopper for bottles, jars, and similar containers
US 2168734 A
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Description  (OCR text may contain errors)

8, 1939- w. sgFRE EMAN 2,168,734

STOPPER FOR B OTTLES, JARS, AND SIMILAR CONTAINERS Filed Feb. 1, 1958 "lllll vi'llll/ Amm\ 4 y 3 //W EJYT'OIE I MAL/0A7 6 FEEEMfi STOPPED FOR B'OTTLES, JARS, AND SIMILAR CONTAINERS WiiliamSimonFreemamLeedgEngland' Application February 1, 1938, Serial No. 188,179

In Great Britain February 10, 1937 1 Claim.

pressure chamber, the wall of which is thin relatively to the diameter of the plug so as to be readily deformable and pressed by gas pressure, within the container, into close sealing contact with the container mouth.

The main object of the invention is to assist the action of the'gas pressure so as to obtain a better sealing eifect, and to this end the invention provides a wall at the mouth of the pressure chamber which partially closes same and which extends radially inwards from the bottom edge of the mouth of the pressure chamber so as to leave a reduced orifice through which the gas from inside the container gains access to the chamber. The effect of this wall at the mouth of the pressure chamber is to brace the side wall of the chamber without sacrificing the inherent resilience thereof, so that not only is undue inward distortion or squeezing-in of the side wall prevented when the plug part is inserted into the container mouth, but the bracing afforded by this wall serves also to prevent the bottom end of the plug side wall (from which the wall extends) from expanding as freely as the middle of the side wall. Thus the tendency is for the .whole plug and pressure chamber to assume a ball shape when the pressure enters, which naturally causes the plug side wall to press harder on the wall of the container mouth.

Subsidiary objects of the invention as will hereinafter appear are, to augment the sealing with reference to the accompanying drawing, wherein:

Figure 1 is a longitudinal cross section of one embodiment wherein the headconsists of a flexible skirt, l 5

Figure 2 is a similar cross section showing the plug fitted into the mouth of the container, and the skirt turned down to grip the outside of the mouth, and

Figure 3 is a longitudinal cross section of 10 another embodiment having a flexible skirt.

In Figures 1 and 2 the stopper, which is made of rubber, consists of a plug part I whereof the interior is hollowed out to provide a gas pressure chamber 2 of elongated flattened shape 1 transversely of the plug with relatively thin and flexible sides, which form the plug walls, the outer surfaces of which have circumferential serrations 3 of saw teeth cross section. The bottom and top walls of the chamber are also rela- 0 tively thin and flexible, so that the whole plug part is readily deformable to enable the gas pressure to have the maximum eifect. Access to the chamber is had through a centrally disposed restricted orifice 4 opening through the bottom'wall 25 5 to the bottom surface of the plug which faces the interior of the container, this surface having formed therein a shallow conical recess 50 which constitutes a gas concentrating chamber collecting and leading'gas from the container to 80 the orifice; Without sacrificing the inherent resilience of the side wall of. the plug, the invention, by means of the inwardly extending wall 5, not only braces the side wall of the plug to prevent undue inward distortion or squeezing-in'of the plug side wall (when being inserted into the bottle neck), but what is more important, the bracing afforded by this wall 5 serves to prevent the inner or bottom end of the plug side wall from expanding as freely as at the middle of the side 0 wall, and thus the tendency is for the whole plug and pressure chamber to assume a ball shape when the pressure enters. This naturally causes the plug side wall to press harder on to the bottle neck. For the purpose of relieving the gas pressure if it rises beyond a predetermined amount, the top wall of the chamber 2 incorporates a blow-oil valve which conveniently consists of a slit S in the rubber adapted to open out if and when the safety pressure margin is exceeded.

The top wall or side of the inner gas chamber 2 is extended laterally and upwardly to provide an encircling flange I which constitutes a flexible skirt adapted to be turned down over and to grip the outside of the rim I of the container as will be seen from Figure 2. Although this skirt may have on its surface whichcontacts with the rim, deformable ribs or projections, for example similar to the saw teeth serrations 3 on the plug part, in the embodiment shown, the skirt is clamped to the rim by means 0! a ring 8 which is accommodated in a circumferential recess ll formed in the opposite surface of the skirt, 1. e. the surface which is an extension of the top wall of the inner gas chamber 2'. There may be two or more of theserecesses l0, but usually one will suiilce, it being preferably located near or at the point which comes opposite the bottom of the rim 8, the remaining portion turning under the rim as shown to thereby complete a very effective closure to the mouth of the container. It will be noted that owing to the resiliency of the relatively thin top wall of the inner gas chamber 2, this wall can snap upwardly as the skirt is turned down, so enabling a good and tight fit on the rim to be obtained.

The characteristics of the stopper shown in Figure 3 are similar to those of the embodiment shown in Figures 1 and 2. In Figure 3, however, the inner gas chamber is of spherical shape with a somewhat deeper gas concentrating chamber, the embodiment being adapted for use with a container having asmaller mouth.

Instead of a head in the form of a flexible skirt, the improved stopper having the gas pressure chamber within the plug part, may have a solid head of greater diameter than that of the plug with the underneath surface recessed out to form a rim gripping flange, normally inturned and parallel to the plug wall, so that as the plug is fitted into the container mouth, the rim of the mouth passes into the recess to be gripped by the said flange. The rim gripping flange may have a re-entrant lip which makes a snug grip round the said rim where this is in the form oi. a flange about the mouth of the container. In this form of the invention the outer surface 01' the plug may be serrated or roughened as before described.

In containers, such as carboys. where gas pressure in excess of atmosphere is present when the container is closed. an ordinary plug-in stopper would be blown oil by the pressure of gas, but by employing the stopper according to the invention the pressure chamber within the plug part enables this gas pressure to be utilised in maintaining the stopper firmly in position, the gas passing from the container through the narrow orifice into the pressure chamber wherein it expands and exerts lateral pressure on the walls of the plug suflicient to grip it tightly to the container mouth. Thus an eiiective closure of such containers can be obtained with a plug-in stopper when constructed according to the present invention.

I claim:

A stopper for bottles, jars and similar containers comprising a resilient body adapted to be squeezed into the mouth oi the container, said body having a cavity and formed at its lower edge with an integral annular bracing wall extending inwardly from the edge of the cavity to a point shortoi the center of the body to form an internal gas pressure chamber whereby the presence of gas under pressure in said chamber will expand the side wall 01 the body between the top and bottom limits oi! the cavities into firm engagement with the. inner side of the neck of the container, and a flexible annular elastic skirt formed with the upper edge of the body of the stopper and adapted to be stretched downwardly into embracing relation with the external mouth portion of the container.

WILLIAM SIMON FREEMAN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2714900 *Jan 28, 1952Aug 9, 1955Williams Ellis HPipe thread protector
US2717728 *Nov 17, 1951Sep 13, 1955Injection Molding CompanyClosure cap for a container
US2737205 *Aug 28, 1952Mar 6, 1956Fullerton Mfg CompanyMeans for protectively isolating internal pipe surfaces
US2746632 *Nov 27, 1953May 22, 1956Aladdin Ind IncFlexible bottle closure
US2947463 *Jun 27, 1957Aug 2, 1960Lily Tulip Cup CorpClosure lids for paper containers
US3065767 *Nov 30, 1959Nov 27, 1962Jordan Ind IncReversible piep cap
US3618809 *Sep 3, 1969Nov 9, 1971Harsco CorpReleasable fluid seal for conduits
US4094429 *Jul 26, 1976Jun 13, 1978Urbin Matthew CStopper for test tube, and the like
US4296786 *Sep 28, 1979Oct 27, 1981The West CompanyTransfer device for use in mixing a primary solution and a secondary or additive substance
US4574975 *Oct 4, 1984Mar 11, 1986Reynolds Metals CompanyResealable container closure
US4763803 *Jan 15, 1987Aug 16, 1988Schneider Bernardus J J AStopper for a container such as a bottle, and a pump connectable thereto for extraction of gaseous medium from or pumping in thereof into the container
US4793510 *Jul 13, 1987Dec 27, 1988Reynolds Metals CompanyResealable container closure
US4911314 *Aug 9, 1988Mar 27, 1990Schneider Bernardus J J AStopper for a container such as a bottle, and a pump connectable thereto for extraction of gaseous medium from or pumping in thereof into the container
US4998633 *Jan 30, 1990Mar 12, 1991Schneider Bernardus J J AStopper for a container such as a bottle and including slit valve structure, for use with a pump for altering and thereafter maintaining altered pressure in the container
US5031785 *Apr 19, 1990Jul 16, 1991Epicurean International Corp.Combination vacuum/pressure pump and valve stopper for food or drink containers
US6907918Feb 10, 2003Jun 21, 2005Thermal Corp.Deformable end cap for heat pipe
US6935380 *Jul 15, 2004Aug 30, 2005California Plumbing Products, Inc.Reversible dual size plumbing end cap
US7090002Nov 8, 2004Aug 15, 2006Thermal Corp.Deformable end cap for heat pipe
US8678212 *Aug 27, 2004Mar 25, 2014Sunrise Kitchen Co., Ltd.Container and container cover for sealing the container opening
US20110136396 *Dec 3, 2009Jun 9, 2011Douglas Neil BurwellRe-enterable end cap
USRE32927 *Oct 6, 1987May 23, 1989Reynolds Metals CompanyResealable container closure
DE3212307A1 *Apr 2, 1982Oct 13, 1983Zahnradfabrik FriedrichshafenClosure cap for containers
WO2003068626A1 *Feb 12, 2003Aug 21, 2003Thermal CorpDeformable end cap for heat pipe
WO2004042292A1 *Oct 22, 2003May 21, 2004Behr Gmbh & CoCollecting tank, heat exchanger and coolant circuit
Classifications
U.S. Classification215/270, 215/260, 138/96.00R, 215/320
International ClassificationB65D41/22, B65D41/02
Cooperative ClassificationB65D41/225
European ClassificationB65D41/22B