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Publication numberUS3464582 A
Publication typeGrant
Publication dateSep 2, 1969
Filing dateOct 9, 1968
Priority dateOct 9, 1968
Publication numberUS 3464582 A, US 3464582A, US-A-3464582, US3464582 A, US3464582A
InventorsGreitzer Morris, Greitzer Simon
Original AssigneeGreitzer Morris, Greitzer Simon
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Releasable container lid lock
US 3464582 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

Sept. 2, 1969 M. GREITZER ET AL 3,464,582

RELEASABLE CONTAINER LID LOCK Filed Oct. 9, 1968 INVENTORS. Mae/91s GEE/7'25}? 5 S/MQ/v xs/rzsk A at? United States Patent O US. Cl. 220-60 13 Claims ABSTRACT OF THE DISCLOSURE This invention relates to containers that are closed by a removable lid that is adapted to snap over and/or clinch onto the peripheral lip of the container vessel. Permanent deformation of the mating configurations is virtually eliminated while providing a reliable lid to vessel lock that is positive when installation is made. With the present invention at least one and preferably a plurality of cam-lug and lock means are incorporated in the vessel lip and lid perimeter, to either supplement or replace the usual frictional engagement of the mating lid to vessel engagement. Also, it is a sealed engagement that is maintained when the lid is locked to the vessel, the lip of the vessel being a head or rolled edge that is embraced in a complementary channel in the mating lid. The channel is undercut so as to hook over the lip and have a snap-on action, and the cam-lug and lock means enhances the mating engagement of the lid and vessel by affording positive retention until the application of deliberate manual deflection of the lock means and which in the preferred form involves the use of resilient material in the formation of the lid so as to enable reuse.

The prior art containers of the type under consideration involve a vessel with a reinforced lip and a lid with a channeled periphery to mate onto said lip. The vessel is either fabricated of metal with a rolled lip, or it is molded of plastic with an enlarged bead for a lip, and in either case the lip is convexly rounded to merge with the inside diameter of the container. The lid is fabricated of metal with a formed channel, or is molded of plastic with an undecut channel for snap-on embracement onto the lip of the vessel. The present invention has application to all containers of the above general description and is particularly utilitarian with containers that employ lids of resilient material, such as plastic lids; the advantage being that unlimited reuse is then made possible. However, the use of deformable material is not precluded when circumstances require that a lid not be resealed when once removed from the vessel, in which case a lid of malleable metal or the like can be employed thereby reducing the possibility of reuse. In all cases the vessel can be made of any suitable material, the cam-lugs thereon being static in nature, the lock means on the lid being movable relative thereto.

An object of this invention is to provide a removable lid on a vessel that is normally locked thereto in a positive manner, and subject to removal through manual deliberation only. Accidental displacement of the lid from the vessel is precluded, while deliberate removal of the lid is facilitated even to the extent that supplemental tools and/or implements are not imperatively necessary.

Another object of this invention is to provide a container vessel and lid combination wherein securement in sealed engagement is positive, all without the addition of parts and with all necessary features incorporated in the existing two elements that are made for use one with the other. With the present invention, the necessary features comprise a cam-lug on one element and a lock means on the other element and in each case formed integrally ice with the element with which it is associated and carried.

It is still another object of this invention to provide a container vessel and lid having the features and advantages hereinabove referred to and which is removable. With the present invention the lid in particular is made of a resilient material having the necessary memory so as to return to its originally fabricated shape, and being sufiiciently deflectable or bendable so as to be manipulated into a releasing condition, all as hereinafter described.

The various objects and features of this invention will be fully understood from the following detailed description of the typical preferred forms and applications thereof, throughout which description reference is made to the accompanying drawings, in which:

FIG. 1 is a perspective view of a typical container and lid combination incorporating the lid lock of the present invention. FIG. 2 is a plan view taken as indicated by line 22 on FIG. 1. FIG. 3 is an enlarged fragmentary section taken as indicated by line 33 on FIG. 2. FIG. 4 is a sectional view taken as indicated by line -44 on FIG. 3. And, FIG. 5 is a view similar to FIG. 3 showing a second form of the invention.

The releasable container lid lock L is shown applied to a typical unit volume bucket or pail-type container B. In the preferred form the lid or closure C is reuseable on the container B, in which case the lid C is made of a resilient plastic material. Likewise it is preferred that the container B be made of a like or the same plastic material. However, it is to be understood that the bodies of material from which the container and lid are made can vary widely as circumstances require, the invention comprising generally the lid lock L involving a cam-lug 20 on the container body and a lock means 30 on the lid body.

The bucket vessel or container body B is of the usual cylindrical configuration, having a disc-shaped bottom 10 and an upstanding side wall 11. The side wall 11 can be flared as it extends upward toward the open top of the container where the wall terminates in a lip 12 that reinforces the open end of the container and that provides the mating configuration to receive the lid C with sealing engagement. A typical and most practical lip 12 is rollshaped or a bead that extends tangentially from the inner diameter of the container wall 11. In the case of a sheet metal construction the lip 12 is a rolled formation of the container wall 11 that uniformly curves upwardly and outwardly, then outwardly and downwardly, and further downwardly and inwardly, and sometimes inwardly and upwardly to approach the outside diameter of the wall 11 (see FIG. 5). In the case of a molded construction the lip 12 is a bead continuing from the container wall 11, curved as above described, and either solid or cored (see FIG. 3). In either case the lip 12 is essentially toroidal in configuration with a smooth uninterrupted and uniformly rounded exterior.

The container closure or lid C is of the usual disc configuration having a circular top 15 and peripheral rim 16 to overlie the lip 12 of the container B. The rim 16 is provided with a downwardly opening annular channel 17 complementary to and adapted to closely fit and embrace the lip 12. The channel 17 is undercut by extending it inwardly from its outer diameter, and so that its outer peripheral extremity depends and underlies the lip 12 to have clinching engagement thereover. Consequently some frictional securement is established by a snap-on engagement of the lid C with the lip 12 of container B.

In accordance with the invention we provide the camlug 20 and lock means 30 comprising the lid lock L, and these elements are features integrally incorporated in the container B and lid C respectively, although a reverse position of these elements can be practiced. Preferably, the cam-lug and cooperative lock means comprising the lid lock L is repeatedly employed at intervals around the lid C, for example at three equally spaced positions and each of which is alike or identical so that a description of one sufiices for all others. As a consequence the lid C is positively locked down at circumferentially spaced intervals 120 apart in addition to the ordinary clinching action hereinabove described.

The cam-lug 20 is a static element preferably formed as part of the container B and is a radial projection extended laterally from the lip 12. The cam-lug 20 can radiate either inwardly or outwardly and is shown as projecting outwardly so as to be outside the sealing engagement of the sealing lip 12 in the channel 17. In practice, the cam-lug 20 extends from the outermost peripheral extremity of the lip 12 intermediate and preferably midway between the top and bottom thereof' The camlug 20 is of nominal but substantial circumferential extent as shown and is characterized by its downwardly disposed shoulder 21 immediately adjacent to the major diameter of the lip and at said intermediate midway point above referred to. In the case of sheet metal construction the cam-lug 2t) and its shoulder 21 is formed by striking a tab out of the wall of metal forming the lip, and in which case the normal end of the tab is inclined outwardly and upwardly to establish the shoulder 21 while the outer side 22 of the tab is inclined to merge with the rolled lip 12. The outer side 22 thereby establishes a downwardly and outwardly inclined cam face. In the case of a molded container construction the cam-lug 20 and its shoulder 21 is formed by casting a projecting extension forming the lip, and in which case the shoulder 21 is a horizontally and downwardly faced step immediately adjacent to the major diameter of the lip 12, and the outer side 22 is an inclined face convexly curved to merge with the rounded bead of lip 12. The radial projection of the cam-lug 20 can be equal to the wall thickness of the lid C as shown, or it can be more or less as circumstances require, depending upon the amount of deflection permitted by the lid C to move the lock means 30. In any case, the shoulder 21 presents a substantial downwardly faced stop shoulder while the side 22 presents an inclined cam face. The ends 23 of the lug 20 can be normal and suitably merged with the lip as shown.

The lock means 30 is a movable element preferably formed as part of the closure or lid C and is established by a radial Opening entering laterally into or through the depending peripheral portion of the rim 16. The opening is complementary to the cam-lug 20 and accommodates said lug so as to permit it to enter into or through the opening. In accordance with the invention the opening of lock means 30 has an upwardly faced step 32 engageable with the shoulder 21 when the lid C is in sealed engagement with the lip 12. In FIG. 3 the engagement is parallel to the plane of the lid C whereby locking force is normal to said plane; while in FIG. the engagement is inclined to the plane of lid C whereby locking force is increased by cam action as the rim 16 is pulled radially inward.

In accordance with the invention the lock means 30 as it is hereinabove described is incorporated in the depending rim 16 of the lid C without enlargement of the same. The cam-shaped side 22 assures a spreading action of a portion of the rim 16 as and when the lid C is depressed onto the lip 12, after which the rim 16 snaps over the lip 12 and the opening of lock means 30 engages over and accommodates the cam-lug 20. In the event that a malleable lid C is used then the rim 16 is reformed onto the cam-lug 20 as by a hammering process. Or preferably in the event that a resilient lid C is used, then the rim 16 is snapped over and into locking position as above described.

When three lid locks L are employed it is a simple matter to install a lid C by hooking one or two lid locks and by then snapping the remaining one or two into positive engagement. In order to remove a lid C the reverse process is practiced wherein the rim 16 at and surrounding one lid lock L is manipulated to shift the lock means radially outward and upward to disengage from the cam-lug 20, whereupon the lid C is simply lifted off of the remaining two lid locks L, thereby separating the lid C from the container B.

Having described only the typical preferred forms and applications of our invention, we do not wish to be limited or restricted to the specific details herein set forth, but wish to reserve to ourselves any modifications or variations that may appear to those skilled in the art:

Having described our invention, we claim:

1. A releasable container lid lock for a removable lid having a depending periphery engageably encompassing a circumferential lip defining the open end of a container, and including, a lug incorporated in the lip and projecting radially from the circumference thereof, and lock means comprised of a complementary opening in the depending periphery of the lid and engageably receiving the lug, the depending periphery being outwardly bendable for removal of the lock means opening from the lug and releasing the lid from the container.

2. The releasable container lid lock as set forth in claim 1, wherein the said lug presents a shoulder faced away from the open end of the container, and wherein the said opening in the depending periphery of the lid presents a seat faced toward the open end of the container for locking engagement with the lug shoulder.

3. The releasable container lid lock as set forth in claim 1, wherein the said lug has an outer side inclined radially outward and terminating at a shoulder faced away from the open end of the container, and wherein the depending periphery of the lid engages the inclined outer side of the lug until the said complementary opening registers with the lug and presents a seat faced toward the open end of the container for locking engagement with the lug shoulder.

4. The releasable container lid lock as set forth in claim 1, wherein the said lug presents a shoulder faced away from the open end of the container and inclined radially outward and toward the open end of the container, and wherein the said opening in the depending periphery of the lid presents an inclined seat faced toward the open end of the container for flat locking engagement with the lug shoulder.

5. The releasable container lid lock as set forth in claim 1, and wherein the removable lid is made of resilient material and the bendable depending periphery returned to its initial form in locking engagement with the lug.

6. The releasable container lid lock as set forth in claim 1, wherein the said lug presents a shoulder faced away from the open end of the container, and wherein the said opening in the depending periphery of the lid presents a seat faced toward the open end of the container for locking engagement with the lug shoulder, and wherein the removable lid is made of resilient material and the bendable depending periphery returned to its initial form in locking engagement with the lug.

7. The releasable container lid lock as set forth in claim 1, wherein the said lug has an outer side inclined radially outward and terminating at a shoulder faced away from the open end of the container, and wherein the depending periphery of the lid engages the inclined outer side of the lug until the said complementary opening registers with the lug and presents a seat faced toward the open end of the container for locking engagement with the lug shoulder, and wherein the removable lid is made of resilient material and the bendable depending periphery returned to its initial form in locking engagement with the lug.

8. The releasable container lid lock as set forth in claim 1, wherein the said lug presents a shoulder faced away from the open end of the container and inclined radially outward and toward the open end of the container, and wherein the said opening in the depending periphery of the lid presents an inclined seat faced toward the open end of the container for flat locking engagement with the lug shoulder, and wherein the removable lid is made of resilient material and the bendable depending periphery returned to its initial form in locking engagement with the lug.

9. A releasable container lid lock for a removable lid having a downwardly opening channeled rim embracing a circumferential lip defining the open end of a container, and including, :1 lug incorporated in the lip and projecting radially from the circumference thereof, and lock means comprised of a complementary opening in the depending outer periphery of the channeled rim and engageably receiving the lug, the said depending periphery of the channeled rim being outwardly bendable for removal of the lock means opening from the lug and releasing the lid from the container.

10. The releasable container lid lock as set forth in claim 9 and wherein the removable lid is made of resilient material and the bendable depending outer periphery of the channeled rim returned to its initial form in locking engagement with the lug.

11. The releasable container lid lock as set forth in claim 9, wherein the said lug presents a shoulder faced away from the open end of the container, and wherein the said opening in the depending outer periphery of the channeled rim presents a seat faced toward the open end of the container for locking engagement with the lug shoulder, and wherein the removable lid is made of resilient material and the bendable depending outer periphery of the channeled rim returned to its initial form in locking engagement with the lug.

12. The releasable container lid lock as set forth in claim 9, wherein the said lug has an outer side inclined radially outward and terminating at a shoulder faced away from the open end of the container, and wherein the depending outer periphery of the channeled rim engages the inclined outer side of the lug until the said complementary opening registers with the lug and presents a seat faced toward the open end of the container for locking engagement with the lug shoulder, and wherein the removable lid is made of resilient material and the bendable depending outer periphery of the channeled rim returned to its initial form in locking engagement with the lug.

13. The releasable container lid lock as set forth in claim 9, wherein the said lug presents a shoulder faced away from the open end of the container and inclined radially outward and toward the open end of the container, and wherein the said opening in the depending outer periphery of the channeled rim presents an inclined seat faced toward the open end of the container for flat locking engagement with the lug shoulder, and wherein the removable lid is made of resilient material and the bendable depending outer periphery of the channeled rim returned to its initial form in locking engagement with the lug.

References Cited UNITED STATES PATENTS 2/1963 Renje. 11/ 1967 Collie.

GEORGE T. HALL, Primary Examiner

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3077608 *May 19, 1960Feb 19, 1963Renje John JPortable receptacle
US3351227 *Oct 18, 1965Nov 7, 1967Phillips Petroleum CoContainer and cover therefor
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4228915 *May 14, 1979Oct 21, 1980General Motors CorporationFuel cap with antirotation feature between cover and skirt portions
US5154292 *Dec 2, 1991Oct 13, 1992Bartucca Frank ASports card sleeve box
US6588615Sep 13, 2000Jul 8, 2003Smithkline Beecham CorporationContainer closure system having a cap removable with less than a 45 twist
US6918507 *Mar 18, 2003Jul 19, 2005Fujitsu Ten LimitedFixing structure
US6932229Aug 26, 2002Aug 23, 2005Smithkline Beecham CorporationContainer closure system having a cap removable with less than a 45 degree twist
US8257636Sep 10, 2009Sep 4, 2012Graham Packaging Company, L.P.Method for reforming a portion of a plastic container to include a transferable element, and the resulting container
US8506285Apr 6, 2010Aug 13, 2013Graham Packaging Company, L.P.Method and apparatus for reforming a portion of a plastic container using induction heating
US8734709Apr 6, 2010May 27, 2014Graham Packaging Company, L.P.Apparatus for reforming a portion of a plastic container
EP0328512A2 *Feb 8, 1989Aug 16, 1989Wilfried WaldenhoferClosure for wide-necked containers, pails, casks, etc.
EP1220795A1 *Sep 13, 2000Jul 10, 2002SmithKline Beecham CorporationContainer closure system
WO1994018091A2 *Feb 5, 1994Aug 18, 1994Guenther BlasingerPackaging device
WO1994026609A1 *May 4, 1994Nov 24, 1994Vanda CasartelliTamper-evident lid for plastic containers
WO2001019696A1 *Sep 13, 2000Mar 22, 2001James L PitassiContainer closure system
Classifications
U.S. Classification220/786
International ClassificationB65D43/02, B65D43/08, B65D43/10
Cooperative ClassificationB65D2543/00694, B65D2543/00537, B65D2543/00777, B65D2543/00092, B65D2543/00277, B65D2543/00509, B65D43/0212, B65D2543/00296, B65D2543/00805, B65D2543/00555, B65D2543/00648, B65D2543/00574
European ClassificationB65D43/02S3E