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Reusable plastic snap-on closure

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Publication number
US3809284A
US3809284A US22313972A US3809284A US 3809284 A US3809284 A US 3809284A US 22313972 A US22313972 A US 22313972A US 3809284 A US3809284 A US 3809284A
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Grant
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Prior art keywords
closure
container
wall
handle
annular
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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R Churan
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GIAMPA DAWN M
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Vulcan Plastics Inc
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D43/00Lids or covers for rigid or semi-rigid containers
    • B65D43/02Removable lids or covers
    • B65D43/0202Removable lids or covers without integral tamper element
    • B65D43/0204Removable lids or covers without integral tamper element secured by snapping over beads or projections
    • B65D43/0212Removable lids or covers without integral tamper element secured by snapping over beads or projections only on the outside, or a part turned to the outside, of the mouth
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00064Shape of the outer periphery
    • B65D2543/00074Shape of the outer periphery curved
    • B65D2543/00092Shape of the outer periphery curved circular
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00259Materials used
    • B65D2543/00296Plastic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00342Central part of the lid
    • B65D2543/0037Flexible or deformable
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00481Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • B65D2543/00509Cup
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00481Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00481Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00555Contact between the container and the lid on the inside or the outside of the container on both the inside and the outside
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00601Snapping means on the container
    • B65D2543/00611Profiles
    • B65D2543/00657U-shaped or inverted U
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00601Snapping means on the container
    • B65D2543/00675Periphery concerned
    • B65D2543/00685Totality
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00712Snapping means on the lid
    • B65D2543/00722Profiles
    • B65D2543/0074Massive bead
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00712Snapping means on the lid
    • B65D2543/00787Periphery concerned
    • B65D2543/00796Totality
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00824Means for facilitating removing of the closure
    • B65D2543/00833Integral tabs, tongues, handles or similar
    • B65D2543/00842Integral tabs, tongues, handles or similar outside of the lid
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/80Packaging reuse or recycling
    • Y02W30/802Packaging eco-design or eco-conception
    • Y02W30/807Packaging containers especially suited for or with means facilitating reusability

Abstract

A snap-on type closure which includes, generally, an annular inverted U-shaped channel about its top wall structure into which the upper edge of the open end container is received. This upper edge of the container has a bead or curl on it, and the annular outer wall of the U-shaped channel has interlocking means on its interior surface which interlock with the curl on the container to affix the closure to the container. At least one gripping and pulling handle is affixed to the annular outer wall of the Ushaped channel, for removing it. It has been found that by placing a knee on the top of the closure, gripping the bail normally provided on such containers with one hand, and the handle on the closure with the other hand, a portion of the edge of the closure can be pulled free sufficiently to break the interlocking seal, and once broken, the closure can be pulled or peeled off of the container. Thereafter, the closure can be replaced, with a resulting sealed-tight engagement which is as virtually as good as the original seal. A single handle can be provided, but a pair of handles preferably are provided. Alternatively, with a single handle, an extended interruption can be provided in the interlocking means on the closure. The second handle and/or the extended interruption permit the closure to be more easily pulled or peeled off the container.

Description

United States Patent [191 Churan REUSABLE PLASTIC SNAP-ON CLOSURE [75] Inventor: Roy G. Churan, Oak Lawn, Ill.

[73] Assignee: Vulcan Plastics Inc., Addison, Ill.

[22] Filed: Feb. 3, 1972 [21] App]. N0.: 223,139

[52] US. Cl 220/60 R [51] Int. Cl B65d 43/10 [58] Field of Search 220/60 R [56] References Cited UNITED STATES PATENTS 3,510,023 5/1970 Ullman 220/60 R 3,688,942 9/l972 Mitchell 220/60 R FOREIGN PATENTS OR APPLICATIONS 1,181,121 ll/l964 Germany 220/60 R Primary Examiner-George E. Lowrance Attorney, Agent, or Firm-Dominik, Knechtel, Godula & Demeur [5 7] ABSTRACT A snap-on type closure which includes, generally, an annular inverted U-shaped channel about its top wall [451 May 7,1974

structure into which the upper edge of the open end container is received. This upper edge of the container has a bead or. curl on it, and the annular outer wall of the U-shaped channel has interlocking means on its interior surface which interlock with the curl on the container to affix the closure to the container. At least one gripping and pulling handle is affixed to the annular outer wall of the U-shaped channel, for removing it. It has been found that by placing a knee on the top of the closure, gripping the bail normally provided on such containers with one hand, and the handle on the closure with the other hand, a portion of the edge of the closure can be pulled free sufficiently to break the interlocking seal, and once broken, the closure can be pulled or peeled off of the container. Thereafter, the closure can be replaced, with a resulting sealed-tight engagement which is as virtually as good as the originalseal.

A single handle can be provided, but a pair of handles preferably are provided. Alternatively, with a single handle, an extended interruption can be provided in the interlocking means on the closure. The second handle and/or the extended interruption permit the closure tov be more easily pulled or peeled off the container.

1 Claim, '5 Drawing Figures REUSABLE PLASTIC SNAP-N CLOSURE This invention relates, in general, to an improved container and, in particular, to an improved reusable plastic closure, for closing and sealing plastic containers.

The plastic closure of the present invention is of the so-called snap-on type, that is, one which is affixed to a plastic container in a fashion such as to effect a sealed-tight closure thereon, without the need of additional securement means such as, for example, a metal ring seal. Plastic closures of this type usually are pro vided with an annular inverted U-shaped-channel about its top wall structure into which the upper edge of the open end container is received. An annular bead or curl is provided about the periphery of the upper edge of the container, and one wall of the U-shaped channel is provided with interlocking means which interlock with this bead or curl to affix the closure to the container. The U-shaped channel furthermore generally is relatively deep so that the upper edge is deeply seated therein, to efi'ect a sealed-tight engagement. In fact, in most cases, the upper edge of the container,'the bead or curl, the U-shaped channel and the interlocking means are soproportioned that one wall of the U- shaped channel must be cut or slit about its periphery, in order to break the sealedtight engagement between the container and the closure, to remove the latter. Alternatively, some constructions are adapted to receive a tool such as a screwdriver or other special instrument beneath and between the container and the closure to effect removal.

Snap-on type closures generally are preferred over those types requiring the use of additional securement means such as ring seals, for the latter can be eliminated. This fact provides several economicadvantages, including the savings in the cost of the ring seal itself and the labor costs associated with afiixing it to the container. However, the fact that the closures are so difficult to remove has, to some extent, discouraged their use. The fact that the one wall of the U-shaped channel has to be cut or slit to remove the closure prevents the closure from being reused to preserve or protect the product within the container which hasnot been removed, and this fact hascontributed greatly to the lack of acceptance of this type of closure.

Accordingly, it is an object of the present invention to provide an improved reusable plastic closure of the above-described snap-on type, forum with plastic containers.

Another object is to provide a plastic container and a snap-on reusable plastic closure which can be removed without the need of additional implements or tools, such as a screwdriver.

A still further object is to provide an improved snapon type closure which, in accordance with a preferred embodiment, can be removed without cutting or slitting the one wall forming the U-shaped channel formed thereon.

Other objects of the invention will in part be obvious and will in part appear hereinafter.

The above objects are accomplished with a snap-on type closure which includes, generally, an annular inverted U-shaped channel about its top wall structure into which the upper edge of the open end container is received. This upper edge of the container has a bead or curl on it, and the annular outer wall of the U-shaped channel has interlocking means on its interior surface which interlock with the curl on the container to affix the closure to the container. The upper edge of the container, the bead or curl, the U-shaped channel and interlocking means, like most presently available similar arrangements, are so proportioned that considerable force or pressure must be exerted uniformly over the upper surface of the closure and particularly about its upper peripheral edge, to affix the closure to the container. In this respect, the arrangement is substantially like presently existing arrangements.

The snap-on closure of the present invention difiers from these existing arrangements in that at least one gripping and pulling handle is afiixed to the annular outer wall of the U-shaped channel, for removing it. It has been found that by placing a knee on the top of the closure, gripping the bail normally provided on such containers with one hand, and the handle on the closure with the other hand, a portion of the edge of the closure can be pulled free sufi'iciently to break the interlocking seal, and once broken, the closure can be pulled or peeled off of the container. Thereafter, the closure can be replaced, with a resulting sealed-tight engagement which is as virtually as good as the original seal.

A single handle can be provided, but as explained more fully below, a pair of handles preferably are provided. Alternatively, with a single handle, an extended interruption can be provided in the interlocking means on the closure. The second handle and/or the extended interruption permit the closure to be more easily pulled or peeled off the container. I

The invention accordingly comprises an article of manufacture possessing the features, properties, and the relation of elements which-will be exemplified in the article hereinafter described, and the scope of the invention will be indicated in the claims.

I For a fuller understanding of the nature and objects of the invention, reference should be had to the following detailed description taken in connection with the accompanying drawings in which? FIG. 1 is a top plan view of a closure exemplary of the invention; V I FIG. 2 is a side plan view of the closure of FIG. 1;

FIG. 3 is a partial bottom plan view of the closure of FIG. 1;

FIG. 4 is a partial sectional view illustrating the manner in which the closure and the container interlock to effect a sealed-tight engagement; and

FIG. 5 is a plan view illustrating the manner in which the closure is removed from the container.

Similar reference characters refer to similar parts throughout the several views of the drawings.

Referring now to the drawing, in FIG. 5 there is illustrated an open end. container 10 having a bottom wall 11 and side wall 12. A pair of bail flange supports 15 (only one of which is shown) are provided on the side wall 12 in diametrically opposed positions, for supporting a wire bail 14. This open end container 10 can be of metal or plastic, and of a type having a head or curl 19 (FIG. 4) provided about the peripheral edge of the side wall 12 at the open end of the container. In this respect, the container 10 is of a generally standard construction. As indicated above, the invention is particularly directed to plastic containers and closures, however, the container could be of metal.

The container 10 is sealed, by means of a plastic closure or lid 13. This closure 13 has a top wall 21 and a inverted U-shaped channel provided at the periphery of the top wall 21 formed by an annular outer wall 22 and a concentric inner wall 23, with a top section 24 connecting them. Interlocking means in the form of an annular bead 28 is provided on the interior surface of the annular outer wall 22, which head 28 interlocks with the bead or-curl 19 on the container to affix the closure 13 to the container 10, as described more fully below.

An upstanding annular support rib 25 (FIGS. 1 and 4) provides additional rigidity to the closure 13, and this support rib 25, as can be best seen in FIG. 4 extends downwardly beneath the top wall 21 and terminates in a curved section which merges with the annular inner wall 23, thereby forming a U-shaped channel 27. Within this Ushaped channel 27 there are provided a number of ribs 31 which provide additional support and rigidity to the closure 13. A number of stress relieving grooves 33 also are provided centrally of the top wall 21 of the closure.

The closure 13 as thus described is substantially similar to presently available snap-on type closures and, as indicated above, a sealed-tight engagement with a container normally is' effected by forcing the peripheral edge of the open end of the container within the U- shaped channel of the closure, until the bead or curl 19 on the container interlocks with the bead 28 on the annular outer wall 22. The container and the closure normally are proportional suchthatthe peripheral edge of the container is deeply seated within the U-shaped channel, and such that a substantial force or' pressure must be'exerted on the closure to forcibly urge the peripheral edge of the container into the U-shaped channel. ln fact, the force or pressure required normally is of such magnitude that the closure cannot be fitted thereon by hand, and a mallet or the like or a machine must be used. In a production-type operation, the closure normally is loosely seated in position on the con tainer, and both then are positioned within a press including a hydraulic cylinder having a circular-shaped pressing disc of a diameter slightly larger than that of the closure affixed to its piston. Upon operating the hy-. draulic cylinder, the pressing disc engages the closure and forcibly urges it into sealed-tight engagement with the container.

Normally, as indicated above, snap-on closures of this type are removed by first cutting or slitting the annular outer wall 22 in a number of places about its periphery or, alternatively, the closure is designed to receive a special tool for effecting the removal. In the instant case, the closure 13 is provided with at least one handle 36 which is integrally formed with the annular outer wall 22, along its lower edge. The handle 36-has a hand-opening 37 in it, to permit it to be easily gripped.

To remove the closure 13, the handle 36 is gripped with one hand and the wire bail 14 is gripped with the other to hold the container 10. Then, the handle 36 is simultaneously pulled upwardly and rearwardly. Preferably and advantageously the knee is placed in the center of the closure 13 while pulling on the handle 36, as generally illustrated in FIG. 5. ln pulling the handle 36 upwardly and rearwardly, the handle being affixed to the lower edge of the annular outer wall 22 functions much like a lever would when used to pry the closure loose to remove it. In pulling the handle 36 upwardly and'rearwardly, the interlocking seal between the bead or curl 19 and the bead 28 is broken about a small por- 4 tion of the lower end of the annular outer wall 22. Initially, a fairly substantial force is required to break the interlocking seal, but once it isbroken, the closure 13,

because of its resiliency or flexibility, will bend upwardly and a progressivelylarger portion of the interlocking seal is pulled or peeled free, as the same force is exerted on the handle, until the closure is entirely removed.

While the closure 13 can be removed with the use of only a single handle 36, itis preferred to provide at least two handles. This second handle can be diametrically opposite the handle 36, as in the case of the handle 38 shown in phantom in FIG. 1, and in such cases, first one then the other handle is manipulated in the manner described above, to effect removal of the closure. Preferably and advantageously, however, the secin which case the product may be spilled or caused to deteriorate if the air-tight seal is broken. Accordingly, it is preferred to discourage the use of .the handles being used to carry the container. By offsetting the handles at an angle less than 180, preferably or less, the container is extremely ackward to carry by means of the handles, because of the resulting unbalanced condition. y v

Also, when the closure is removed using only one handle, such as the handle 36, it is found that the closure will bend and the interlocking seal will disengage relatively easily until a portion -of the periphery of the closure extendingapproximately 20-30 radially on each of the opposite sides of theharidle are free. At this point, there is a tendency for the closure to hang-up, or stick, for further bending of the closure tends to resist the releasing action of the interlocking seal. The closure, of course, can be completely removed simply by exerting a sufficient force to overcome this resistance, but a second handle properly positioned permits the closure to be removed far more easily.

The second handle therefore preferably and advantageously is radially displaced from the first handle at or approximately at the location on the annular outer wall 22 where the closure 13 bends and tends to resist the releasing action of the interlocking seal. As indicated above, this location is approximately 20 to 30 radially displaced on one side or the other of the first handle.

With the second handle located as described above, the closure 13 is removed by first manipulating the first handle until further removal is resisted. Then, the second handle is manipulated to complete the removal. By being positioned at the location where the closure binds and hence resists removal, pulling on the second handle exerts a force on the closure at the location of the binding. The resistance, therefore, is lessened, and

, less force therefore is required to remove the closure.

The closure. 13 can be made more easily removable, without any substantial sacrifice to the seal between the closure and the container, by providing extended interruptions 41 and 42 in the annular bead 28 on the interior surface of the annular outer wall 22. These interruptions 41 and 42 can be used in combination with a second handle, however, they can be used as an alternative thereto. These interruptions 41 and 42, like the second handle, preferably and advantageously are positioned to be radially displaced within a range of 30 to 45 from the handle 36, on each of the opposite sides of the latter, at the location where there is a tendency for the closure to hang-up, or stick, during removal. By eliminating the annular bead 28 at these locations, the closure is automatically released since there is no interlocking between the closure bead 28 and the curl l9, hence the resistance to removal is eliminated. These interruptions 41 and 42 should be approximately 1 inch to 2 inches in length, to effect the release.

Once the closure 13 is removed, it can be used to reclose the container 10, since the annular outer wall 22 is in tact, not having been cut or slit to effect removal of the closure, as in the past.

It will thus be seen that the objects set forth above,

among those made apparent from the preceding description are efficiently attained and certain changes may be made in the above article. Accordingly, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Now that the invention has been described, what is claimed as new and desired to be secured by Letters Patent is:

1. In combination with an open end container having at its open end a bead-like curl extending about the periphery of the upper edge of its side wall: a snap-on plastic closure adapted for removable replacement over the open end of said container comprising a center top wall structure, a perimetrical inverted U-shaped channel provided at the periphery of said top wall structure; said U-shaped channel being formed by an inner and a concentric outer annular wall and a top section interconnecting the inner and outer walls; at least one handle integrally affixed to the lower edge of said annular outer wall and extending downwardly as an extension thereof; and interlocking means formed on the interior of said outer annular wall and lockingly engaged beneath said bead-like curl to provide an interlocking seal between them to removably secure said closure over the open end of said container, said interlocking means extending substantially completely about the interior of said outer annular wall and having at least two extended interruptions therein each within a range of length so as not to cause any substantial sacrifice to the seal between the closure and the container and each radially displaced within a range of 30 to 45 on opposite sides of said handle, said handle when pulled upwardly and rearwardly with said container held stationary functioning as a lever to break said interlocking seal and thereafter as said handle is pulled to remove said closure from said container, said interruptions substantially eliminating the tendency of said closure to hang-up or stick during removal, whereby said closure can be removed without the need of additional implements and without first having to cut or slit said annular outer wall about its periphery.

Claims (1)

1. In combination with an open end container having at its open end a bead-like curl extending about the periphery of the upper edge of its side wall: a snap-on plastic closure adapted for removable replacement over the open end of said container comprising a center top wall structure, a perimetrical inverted U-shaped channel provided at the periphery of said top wall structure; said U-shaped channel being formed by an inner and a concentric outer annular wall and a top section interconnecting the inner and outer walls; at least one handle integrally affixed to the lower edge of said annular outer wall and extending downwardly as an extension thereof; and interlocking means formed on the interior of said outer annular wall and lockingly engaged beneath said bead-like curl to provide an interlocking seal between them to removably secure said closure over the open end of said container, said interlocking means extending substantially completely about the interior of said outer annular wall and having at least two extended interruptions therein each within a range of length so as not to cause any substantial sacrifice to the seal between the closure and the container and each radially displaced within a range of 30* to 45* on opposite sides of said handle, said handle when pulled upwardly and rearwardly with said container held stationary functioning as a lever to break said interlocking seal and thereafter as said handle is pulled to remove said closure from said container, said interruptions substantially eliminating the tendency of said closure to ''''hang-up'''' or stick during removal, whereby said closure can be removed without the need of additional implements and without first having to cut or slit said annular outer wall about its periphery.
US3809284A 1972-02-03 1972-02-03 Reusable plastic snap-on closure Expired - Lifetime US3809284A (en)

Priority Applications (1)

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US3809284A US3809284A (en) 1972-02-03 1972-02-03 Reusable plastic snap-on closure

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US3809284A US3809284A (en) 1972-02-03 1972-02-03 Reusable plastic snap-on closure
CA 162688 CA1003785A (en) 1972-02-03 1973-02-01 Reusable plastic snap-on closure

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US3809284A true US3809284A (en) 1974-05-07

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0195149A1 (en) * 1985-03-20 1986-09-24 Curver Packaging Ltd. Container with closure
DE8707744U1 (en) * 1987-05-30 1987-11-05 Jonas, Ralf Andreas, 8531 Muenchsteinach, De
US4880131A (en) * 1987-11-13 1989-11-14 Van Dorn Company Ringless paint container
US4936482A (en) * 1987-11-13 1990-06-26 Van Dorn Company Ringless paint container
US5065888A (en) * 1987-11-13 1991-11-19 Van Dorn Company Improved ringless paint container with step down lid
US5240138A (en) * 1987-11-13 1993-08-31 Van Dorn Company Ringless paint container
US5425467A (en) * 1993-12-28 1995-06-20 Rubbermaid Incorporated Bowl lid having integral lever mechanism
US5624051A (en) * 1994-11-25 1997-04-29 Rubbermaid Incorporated Container with handles and cover
US6164484A (en) * 1998-12-15 2000-12-26 Igloo Corporation Insulated snap fit container lid
US20060091140A1 (en) * 2004-10-28 2006-05-04 Perry Michael R Microwaveable packaged good article overcap
US20060266751A1 (en) * 2004-10-28 2006-11-30 El-Afandi Ali Removable overcap for microwaveable packaged good article
WO2007098031A2 (en) * 2006-02-16 2007-08-30 Snapware Corporation Container/lid combination for storing food and other articles
US20080047960A1 (en) * 2006-08-25 2008-02-28 Albrecht David D container
US20130098914A1 (en) * 2010-01-11 2013-04-25 Superfos A/S Container

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1181121B (en) * 1959-12-22 1964-11-05 Alfred Boenecke Kunststoffbehaelter with attachable lid
US3510023A (en) * 1968-08-14 1970-05-05 Inland Steel Co Plastic container and lid therefor
US3688942A (en) * 1970-11-20 1972-09-05 Continental Can Co Container and closure combination

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1181121B (en) * 1959-12-22 1964-11-05 Alfred Boenecke Kunststoffbehaelter with attachable lid
US3510023A (en) * 1968-08-14 1970-05-05 Inland Steel Co Plastic container and lid therefor
US3688942A (en) * 1970-11-20 1972-09-05 Continental Can Co Container and closure combination

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0195149A1 (en) * 1985-03-20 1986-09-24 Curver Packaging Ltd. Container with closure
DE8707744U1 (en) * 1987-05-30 1987-11-05 Jonas, Ralf Andreas, 8531 Muenchsteinach, De
US4880131A (en) * 1987-11-13 1989-11-14 Van Dorn Company Ringless paint container
US4936482A (en) * 1987-11-13 1990-06-26 Van Dorn Company Ringless paint container
US5065888A (en) * 1987-11-13 1991-11-19 Van Dorn Company Improved ringless paint container with step down lid
US5240138A (en) * 1987-11-13 1993-08-31 Van Dorn Company Ringless paint container
US5425467A (en) * 1993-12-28 1995-06-20 Rubbermaid Incorporated Bowl lid having integral lever mechanism
US5507407A (en) * 1993-12-28 1996-04-16 Rubbermaid Incorporated Bowl lid having integral lever mechanism
US5624051A (en) * 1994-11-25 1997-04-29 Rubbermaid Incorporated Container with handles and cover
US6164484A (en) * 1998-12-15 2000-12-26 Igloo Corporation Insulated snap fit container lid
US7861881B2 (en) 2004-10-28 2011-01-04 General Mills Cereals, Llc. Removable overcap for microwaveable packaged good article
US20060266751A1 (en) * 2004-10-28 2006-11-30 El-Afandi Ali Removable overcap for microwaveable packaged good article
US8011524B2 (en) 2004-10-28 2011-09-06 General Mills Cereals, Llc Microwaveable packaged good article overcap
US20060091140A1 (en) * 2004-10-28 2006-05-04 Perry Michael R Microwaveable packaged good article overcap
WO2007098031A3 (en) * 2006-02-16 2008-10-09 Ralph R Hickman Container/lid combination for storing food and other articles
WO2007098031A2 (en) * 2006-02-16 2007-08-30 Snapware Corporation Container/lid combination for storing food and other articles
US8596492B2 (en) 2006-02-16 2013-12-03 Snapware Corporation System for aiding the visual matching of containers having diverse openings with corresponding lids
US20080047960A1 (en) * 2006-08-25 2008-02-28 Albrecht David D container
US8006863B2 (en) 2006-08-25 2011-08-30 Wells Enterprises, Inc. Container
US20130098914A1 (en) * 2010-01-11 2013-04-25 Superfos A/S Container

Also Published As

Publication number Publication date Type
CA1003785A1 (en) grant
CA1003785A (en) 1977-01-18 grant

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