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Publication numberUS3888373 A
Publication typeGrant
Publication dateJun 10, 1975
Filing dateAug 15, 1973
Priority dateAug 15, 1973
Publication numberUS 3888373 A, US 3888373A, US-A-3888373, US3888373 A, US3888373A
InventorsGach Peter P, Montgomery Gary V
Original AssigneeSunbeam Plastics Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Child-resistant closure
US 3888373 A
Abstract
The invention is a closure for retaining liquids. The closure cap includes an outer skirt and inner skirt and an intermediate skirt. The inner skirt is engaged within the container neck to form a first seal. A plurality of concentric members depend from the container cap and engage the top of the container neck to form a second seal. An integral annular sealing ring is positioned between the intermediate skirt and the container to form a third seal.
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Description  (OCR text may contain errors)

United States Patent [1 Gach et al.

I CHILD-RESISTANT CLOSURE [75} Inventors: Peter P. Gach; Gary V.

Montgomery. both of Evansville. Ind.

[73] Assignee: Sunbeam Plastics Corporation.

Evansville. Ind.

22 Filed: Aug. 15. i973 211 App]. No.: 388,594

[52} U.S. Cl. 2l5/2l4; 2l5/34l; 215/344 [5] lnt. Cl 865d 55/02 [58] Field of Search BIS/214. 216. 2l8, 224. 215/330. 34L 344. 346. 354

[Sol References Cited UNITED STATES PATENTS 2.684.168 7/!954 McGinnis 2l5/33t) 1768,76: lUIIJSh Guinct 215/344 X 2.817193 3/[958 Martin 215/) X 3.074.579 H1963 Miller 215/344 3113.205 .UIWi-l Ehrsam BIS/3M X 1 June 10, 1975 3.233.769 2/!966 Jessop 2l5/2l6 3.422.978 l/l9h9 Quackcnbush ZlS/Zlh 3.581.926 (1/!971 Rnder M51330 3.717.287 2/l973 Marand 2l5/9 X FOREIGN PATENTS OR APPLICATIONS |.558.94H 1/1969 France 215/330 Primary Exnminer-D0nald F. Norton Attorney. Agent. or FirmHenry K. Leonard 1 ABSTRACT The invention is a closure for retaining liquids. The closure cap includes an outer skirt and inner skirt and an intermediate skirt. The inner skirt is engaged within the container neck to form a first seal. A plurality of concentric members depend from the container cap and engage the top of the container neck to form a second seal An integral annular sealing ring is positioned between the intermediate skirt and the con' tainer to form a third seal.

2 Claims. 4 Drawing Figures I CHILD-RESISTANT CLOSURE BACKGROUND OF THE INVENTION Closures which are utilized for liquids have been a problem in the art. These closures generally comprise a container and a cap wherein, for example, the cap is threaded onto the container neck. When plastic cups are utilized, there is a tendency for the cap to take a set after being initially placed on the container. When this occurs, leakage often results unless the cap is mounted on the container with ever-increasing torque. Various methods have been used in the past to eliminate leakage. The most common prior art structure is to place a cork or another type insert in the upper part of the cap. When the cap is placed on the container, the cork engaged the neck and tended to prevent leakage.

Another problem with many prior art caps is that, particularly with plastic caps, there is a tendency for the cap to back off after its initial placement on the container. Again, this often results in leakage.

SUMMARY OF THE INVENTION The present invention relates to a closure which is particularly adapted for holding liquids. The closure includes a container having a bottom, a sidewall, a neck and an annular shoulder extending between the neck and the sidewall. A cap having atop and an outer skirt is threadably engaged on the container neck. The cap also includes an inner skirt which extends downwardly into the neck forming a first liquid seal when the cap is positioned on the container. An intermediate skirt is positioned between the outer skirt and the inner skirt. A sealing ring is positioned between a lower surface of the intermediate skirt and a portion of the container. The annular ring serves as an O-ring" and functions as a second sealing means. Additional means. for example a plurality of concentric rings, depend downwardly between the inner skirt and the intermediate skirt. When the cap is in closed position on the container, the depending rings engage the upper surface of the container neck and serve as a third sealing means.

BRIEF DESCRIPTION OF THF DRAWINGS FIG. I is a fragmentary, side elevational view, show ing a closure according to the present invention. The cap is shown elevated from the container;

FIG. 2 is a sectional view taken along the line 2-2 of FIG. 1;

FIG. 3 is a sectional view taken along the line 3-3 of FIG. 1; and

FIG. 4 is a fragmentary, sectional view. similar to FIG. 1. showing the cap in closed and sealing relationship with the container.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A closure according to the prcsent invention is gener ally indicated in the drawings by the reference number l0. The closure includes a container ll having a bottom 12, a side all 13, a threaded neck I4 and an annular shoulder I5 extending betueen the neck 14 and the sidewall I3. In the present embodiment, the shoulder 15 is stcppcd and includes an upper portion 16 and a lowcr portion 17 [see FIG. 4). The neck 14 includes an inner face I8.

The closure 10 also includes a cap 20 having a top 21 and an outer skirt 22. Spaced concentrically with respect to the outer skirt 22 is an inner skirt 23 of a shorter length than the outer skirt 22. The inner skirt 23 fits within the neck 14 of the closure 10 and engages the inner face 18, when the cap is in its closed position. The engaging relationship between the inner skirt 23 and the face 18 of the neck I4 provides a first sealing means which tends to prevent leakage of material from within the container II.

An intermediate skirt 24 depends from the top 2! and is concentrically located between the outer skirt 22 and the inner skirt 23. The intermediate skirt 24 includes a lower end 25 having an interior surface 26. One or more interference rings or annular sealing rings 27 are positioned between the interior surface 26 of the intermediate skirt 24 and the upper portion 16 of the annular shoulder I5. In the present embodiment. the annular sealing rings 27 are integral with the container I l and act as O-rings. The annular sealing rings 27 both seal the escape of material from within the container I1 and also provide friction forces which tend to prevent the cap 20 from backing off the container 1].

Referring to FIG. 4, a plurality of concentric rings 28, 29 and 30 depend from the top 21 of the cap 20 and are located between the intermediate skirt 24 and the inner skirt 23 of the cap 20. The concentric rings 28-30 are semi-flexible in nature and are ofa length such that when the cap 20 is in its closed position on the container 11, lower edges 31 of the rings 2830 engage and are compressed by a top surface 33 of the container neck 14. This functions as a sealing means to prevent leakage from the container II.

In the present embodiment, the cap 20 has a pair of opposed downwardly extending lugs 34 formed on the bottom edge of the outer skirt 22. Complementary lug recesses 35 are provided in the shoulder 15 of the container l]. Camming surfaces 36 are provided adjacent the lug recesses 35. To assemble the cap 21 on the container 11, the cap is applied to the upper end of the container II and rotated in a clockwise direction. Continued rotation causes the lugs 34 to engage the camming surfaces 36 which spreads the lugs 34 and leads them to the lug recesses 35. When this occurs, the lugs 34 snap into the lug recesses 35 and the cap 20 is retained on the container II until the lugs 34 are removed from the lug recesses 35. To remove the cap 20, the sides of the cap opposed from the lugs 34 are squeezed. The cap 20 is constructed of a semi-flexible material and the squeezing deforms the cap to an oval configuration so that the lugs 34 are moved out of the lug recesses 35. The cap 20 then can be rotated in a counterclockwise direction to remove the cap 20 from the threaded neck 14 in the normal manner.

Various other modifications of the above-described preferred embodiments will be apparent to those skilled in the art and may be made without departing from the spirit and scope of the appended claims.

What we claim is;

l. A child-resistant closure for containing liquid. said closure consisting of a container having a tubular neck, a body and a shoulder portion adjacent the base of said neck, and a cap for said container.

a. said container neck having a flat annular lip and a smooth cylindrical inner surface,

b. said cap having a disc likc top and three radially spaced concentric skirts depending from said top.

the top of said cap having a central area overlying said container neck and an annular area circumjacent thereto and connecting said outermost skirt to said intermediate skirt.

the outer surface of the innermost one of said skirts being substantially cylindrical and having an interference fit with the inner surface of said neck,

. at least one annular. downwardly extending, flexible. first sealing element in the space between said innermost one of said skirts and the intermediate one of said skirts, said first element being engaged in sealing contact with said container lip when said cap is in closed position on said container.

. cooperating mating threads on the exterior of said container neck and the interior of said intermediate skirt.

. that portion of said cap top overlying said container the inner surface ofsaid intermediate skirt and the outer surface of said neck having cooperating circumjacent areas that are opposed to each other when said cap is near to and in closed position on said container.

h. the first of said areas being the inner cylindrical surface of a portion of said intermediate skirt at a level spaced below said threads, said portion having an inner diameter greater than the outside diameter of the threads on said neck and a cross sectional thickness less than the thickness of that portion of said intermediate skirt where said cap threads are located.

i. the second of said areas being on said container neck and having integral. circumferentially extending, axially spaced and radially protruding sealing ribs thereon. said ribs having a diameter greater than the outside diameter of said threads and an interence fit interiorly with the first said area,

j. said first cylindrical surface having a greater axial extent than said ribs for effecting a seal therewith when said cap approaches closed position and when said cap is at closed position and for maintaining a seal when said cap shifts axially due to thread manufacturing tolerances.

2. A closure according to claim 1 and cooperating child-resistant locking means on the outermost one of the skirts on the cap and the shoulder portion of the container.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2684168 *Oct 24, 1949Jul 20, 1954Wheeling Stamping CoBottle cap
US2768762 *Oct 1, 1952Oct 30, 1956William HerterSealing members or elements
US2827193 *Sep 6, 1955Mar 18, 1958Martin Warren NClosure cap for containers
US3074579 *Jan 15, 1960Jan 22, 1963Formold Plastics IncCombination closure cap and stopper
US3123205 *Jul 17, 1962Mar 3, 1964 Waterproof match package
US3233769 *Mar 2, 1964Feb 8, 1966Jessop Peter MScrew-capped containers and safety devices therefor
US3422978 *Jul 7, 1967Jan 21, 1969Whitney Blake CoSelf-locking bottle cap
US3581926 *Apr 25, 1969Jun 1, 1971Roder EberhardClosure cap for containers
US3717287 *May 11, 1970Feb 20, 1973Ciba Geigy CorpSelf-sealing and locking collar and container
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3958708 *May 5, 1975May 25, 1976Sunbeam Plastics CorporationOversized safety cap
US4134513 *Jun 29, 1977Jan 16, 1979Owens-Illinois, Inc.Child-resistant safety closure
US4387819 *Dec 23, 1981Jun 14, 1983Corsette Douglas FrankSealing means for a snap-on fitment
US4410097 *Jun 18, 1982Oct 18, 1983Owens-Illinois, Inc.Child resistant package
US4493427 *Jun 8, 1983Jan 15, 1985Stericric SaFlask for sterile liquids
US4535906 *Jun 1, 1984Aug 20, 1985The Drackett CompanyBottle
US5024341 *Apr 25, 1990Jun 18, 1991Societe Anonyme Des Eaux Minerales D'evianNipple adapter for a bottle comprising a screw ring
US5101993 *May 10, 1990Apr 7, 1992Phoenix Closures, Inc.Closure seal
US5101994 *Apr 3, 1991Apr 7, 1992Silgan Plastics CorporationContainer with an aligning cap and neck construction
US5115928 *Dec 11, 1990May 26, 1992Drummond Jr Archie GConvertible child-resistant closure assembly
US5165559 *Dec 17, 1990Nov 24, 1992Owens-Illinois Closure Inc.Child resistant closure and package
US5586671 *Feb 23, 1996Dec 24, 1996The Procter & Gamble CompanyChild resistant package
US5890621 *Oct 21, 1996Apr 6, 1999Gerber Products CompanyCup for young children with cap valved for fluid control
US6422415Feb 4, 2000Jul 23, 2002Playtex Products, Inc.Leak-proof cup assembly with flow control element
US6460718 *Sep 15, 2000Oct 8, 2002Gateway Plastics IncorporatedContainer with a threaded cap having a stepped sealing ring with a plurality of narrow sealing surfaces
US6691901Dec 14, 2001Feb 17, 2004Gateway Plastics, Inc.Closure for a container
US7055708 *Oct 9, 2003Jun 6, 2006Owens-Illinois Prescription Products Inc.Child-resistant package
US7694835 *Apr 13, 2010Rexam Closures And Containers Inc.Drafted neck finish having angled thread face and closure package
US8079483Sep 11, 2008Dec 20, 2011Rexam Healthcare Packaging Inc.Closure with stopping mechanism
US8123058Sep 11, 2008Feb 28, 2012Rexam Healthcare Packaging Inc.Closure with stopping mechanism
US20030071041 *Sep 3, 2002Apr 17, 2003Gateway Plastics IncorporatedClosure for a container
US20060124501 *Sep 23, 2005Jun 15, 2006Mcneely KevinDosage reminder cap
US20100059519 *Sep 11, 2008Mar 11, 2010Brian BrozellClosure with Stopping Mechanism
US20130276413 *Dec 21, 2011Oct 24, 2013Manfred Imand KurmisSealing assembly for a closure
DE2828063A1 *Jun 27, 1978Jan 11, 1979Owens Illinois IncKindersicherer sicherheitsverschluss
DE2828100A1 *Jun 27, 1978Jan 18, 1979Owens Illinois IncKindersicherer sicherheitsverschluss
Classifications
U.S. Classification215/214, 215/341, 215/344
International ClassificationB65D50/04, B65D50/00
Cooperative ClassificationB65D50/046
European ClassificationB65D50/04F2