US3677430A - Self-centering and venting closure - Google Patents
Self-centering and venting closure Download PDFInfo
- Publication number
- US3677430A US3677430A US66529A US3677430DA US3677430A US 3677430 A US3677430 A US 3677430A US 66529 A US66529 A US 66529A US 3677430D A US3677430D A US 3677430DA US 3677430 A US3677430 A US 3677430A
- Authority
- US
- United States
- Prior art keywords
- leg
- closure
- container body
- annular
- outer annular
- Prior art date
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D51/00—Closures not otherwise provided for
- B65D51/16—Closures not otherwise provided for with means for venting air or gas
- B65D51/1672—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by manual actuation of the closure or other element
- B65D51/1688—Venting occurring during initial closing or opening of the container, by means of a passage for the escape of gas between the closure and the lip of the container mouth, e.g. interrupted threads
- B65D51/1694—Venting occurring during initial closing or opening of the container, by means of a passage for the escape of gas between the closure and the lip of the container mouth, e.g. interrupted threads the closure being for a box-like container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
- B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
- B65D21/0209—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together stackable or joined together one-upon-the-other in the upright or upside-down position
- B65D21/0217—Containers with a closure presenting stacking elements
- B65D21/0219—Containers with a closure presenting stacking elements the closure presenting projecting peripheral elements receiving or surrounding the bottom or peripheral elements projecting from the bottom of a superimposed container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D43/00—Lids or covers for rigid or semi-rigid containers
- B65D43/02—Removable lids or covers
- B65D43/0202—Removable lids or covers without integral tamper element
- B65D43/0204—Removable lids or covers without integral tamper element secured by snapping over beads or projections
- B65D43/0212—Removable 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00018—Overall construction of the lid
- B65D2543/00064—Shape of the outer periphery
- B65D2543/00074—Shape of the outer periphery curved
- B65D2543/00092—Shape of the outer periphery curved circular
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00018—Overall construction of the lid
- B65D2543/00259—Materials used
- B65D2543/00296—Plastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
- B65D2543/0049—Contact 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
- B65D2543/00518—Skirt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
- B65D2543/00537—Contact 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
- B65D2543/00555—Contact between the container and the lid on the inside or the outside of the container on both the inside and the outside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00592—Snapping means
- B65D2543/00601—Snapping means on the container
- B65D2543/00611—Profiles
- B65D2543/00629—Massive bead
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00592—Snapping means
- B65D2543/00601—Snapping means on the container
- B65D2543/00675—Periphery concerned
- B65D2543/00685—Totality
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00592—Snapping means
- B65D2543/00712—Snapping means on the lid
- B65D2543/00722—Profiles
- B65D2543/0074—Massive bead
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00592—Snapping means
- B65D2543/00712—Snapping means on the lid
- B65D2543/00787—Periphery concerned
- B65D2543/00805—Segments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00953—Sealing means
- B65D2543/00962—Sealing means inserted
- B65D2543/00972—Collars or rings
Definitions
- U.S. Cl 22 2211547506 pensate for messes during cooling of the molded closure and B65d 41 22 to act as a receptacle for a stacked container.
- the outer annula.r leg also has an end recess for self centering of the closure [58] Field of Search ..2l5/4 l 56, 42, 40; 220/60, upon the container rim [56] References Cited 9 Claims 5 Drawing UNITED STATES PATENTS 3,378,177 4/1968 Gran ..220/42 C Patentd July 18, 1972 2 Sheets-Sheet l Patented July 18, 1972 3,677,430
- the present invention relates to the container closure art and, more particularly, to a closure having a flexible sealing member, recesses for venting, a recess for self-centering on the container and a recess for providing a stable stacking base.
- the present invention solves the above-mentioned problems by providing a tamper proof closure adapted to close an open end of a container body comprising a center portion; a peripheral channel connected to the center portion and having a base portion from which extends an outer annular leg, an inner annular leg, and an annular flexible sealing leg, the annular flexible sealing leg being positioned between the inner and the outer annular legs; and means connected to the peripheral channel adapted to lockingly engage the open end of the container body whereby the open end of the container body is receivable between the outer annular leg and the annular flexible sealing leg, and the annular flexible sealing leg is adapted to abut the end of said container body and flex to form at least a partial seal about the open end.
- An object of the present invention is to provide a closure which is self-sealing.
- Another object of the present invention is to provide a closure which allows compresed gas, such as air, to escape from the space in a container body above the contents within the container body when the closure is engaged to the container body.
- Still another object of the present invention is to provide a closure which is self-centering on a container body to facilitate engagement of the closure to the container body, especially when the closure is handled by a machine during the engagement process.
- Yet another object of the present invention is to provide a closure which will act as a receptacle for the bottom portion of another container so that stable stacking of a multiple number of sealed containers is achievable.
- Another object of the present invention is to provide a container having all of the four above-mentioned features in a single closure embodiment.
- FIG. 1 is an elevational view of a container body with a closure in locking engagement partially broken away to illustrate the contents of the container.
- FIG. 2 is an enlarged elevational sectional view of a portion of a container body and a closure in a partially engaged position and featuring a gas escape route.
- FIG. 3 is a bottom view of a portion of the closure of FIGS. I and 2.
- FIG. 4 is an enlarged sectional view of the closure sealed to the container body taken along line 4-4 of FIG. 1 including an illustration of a bottom portion of another container body stacked upon the closure.
- FIG. 5 is an enlarged elevational sectional view similar to that shown in FIG. 2 illustrating the self-centering feature of the closure.
- a closed container 10 comprised of a container body 12 and a closure 14.
- a liquid content 16 is within the container body 12, though it is to be understood that the container may be used to enclose any suitable product whether liquid or solid.
- the container body and the closure are preferably constructed of a synthetic resin material, though metals or glasses may be selectively used.
- a suitable synthetic resin material is polyethylene having a density ranging between 0.941 and 0.965 grams per cubic centimeter (ASTM Test D-l505 63T) and a melt index ranging between 0.1 and 25.0 (ASTM Test D-l 238 -62T). When the latter-mentioned polyethylene is employed in producing an injection molded closure, the melt index preferably lies between 4.0 and 25.0.
- the closure member may be constructed or fabricated from various other suitable materials and by any one of a variety of manufacturing processes.
- the container body 12 is generally cylindrical having a slight taper of about 2 degrees.
- the closure 14 conform to the container body.
- FIG. 4 there is illustrated in more detail the various portions of the closure and the locking engagement between the closure and the container body.
- a bead 16 which extends in an outward direction away from the interior of the container.
- the head includes a cam surface 18 and an abuttment surface 20 which act in conjunction with a cam follower surface 22 and an abuttment surface 24, respectively, of the closure to cause the locking engagement of the closure and the container body.
- the cam follower surface 22 and the abuttment surface 24 are part of an inwardly extending bead 26 which in integral with an annular outer leg 28.
- the outer leg is connected at one end to a base portion 30 from which an annular inner leg 32 and an annular flexible sealing leg 34 extend.
- the base portion, the outer annular leg, the inner annular leg, and the annular flexible sealing leg comprise a peripheral channel which receives the bead 16 of the container body between the outer leg and the sealing leg.
- a center portion 38 of the closure Connected to the inner annular leg 32 at an end 36 which is opposite from the base portion is a center portion 38 of the closure.
- the center portion is generally flat except for a small central recess 40 which is provided to receive a ring 41 of material connected to a bottom portion 43 of a stacked container body.
- FIGS. 2 and 3 the closure is partially engaged to the bead 16 of the container body.
- the term partially engag is used to mean that the abuttment surface 24 of the bead 26 on the closure has not yet come in contact with the abuttment surface 20 of the bead 16.
- the cam surface 18 is shown to have forced the cam follower surface 22 outwardly so as to cause the leg 28 to have a bowed or generally arcuate configuration.
- the annular flexible sealing leg 34 abuts the interior surface 42 of the container body and is flexed thereby.
- Spaced along the flexible sealing leg is a plurality of recesses 44 which provide a passageway for the escape of gas or air within the spacing 46.
- the liquid content 16 has a level slightly below the region to be occupied by the closure.
- the machine applies the force equally around the peripheral channel. Gas occupying the space between the liquid content and the bead of the container body would ordinarily be progressively compressed as the closure and container body engaged. This causes an unnecessary stress on the container body and the closure.
- the compressed gas is allowed to escape upwardly along the interior surface 42 over the bead 16 and then through one of a plurality of apertures 50 (FIG. 1).
- the apertures are also provided to allow separation of the closure from the container.
- the closure and the container body are in their locked, engaged position, the interior surface 42 of the container body extends beyond the recesses 44 so that the annular flexible sealing leg acts m a seal. This is so even though during the engagement process gas is allowed to escape.
- the sealing provided by the flexible sealing leg is enhanced because the sealing leg is of a guage sufficiently flexible to allow the leg to conform to the sloping interior surface of the container body.
- the closure be made of a material having a memory, that is, any distortion of an element will establish a biasing force tending to return the element to its original position.
- the flexing of the sealing leg by the interior surface of the container body establishes a biasing force in the sealing leg attempting to return the sealing leg to its original position.
- This biasing force increases the sealing abuttment between the sealing leg and the interior surface of the container body.
- additional scaling is accomplished by providing a hollow O-ring seal 52 in the space between the bead 16 and the base portion 30. The Oring is compressed when the closure and the container body are fully engaged to substantially fill the space and provide a hermetic sea].
- the closure is constructed to allow stable stacking of one container upon another. This is achieved partially by venting the compressed gases so as to prevent the closure or the container body from bellowing outwardly under the increased pressure and partly by the structural form of the closure.
- the inner annular leg 32 and the center portion 38 form a generally cylindrical receptacle to receive the bottom portion 43 of a container body which has been stacked upon the closure.
- the inner annular leg has a diametrical dimension slightly larger than the diameter of the bottom portion of the stacked container so that an abuttment retainer is achieved.
- the inner annular leg and center portion also provide a non-warped platform contributing to stable stacking of a large number of containers.
- the present invention provides for the self centering of the closure on the container body. Referring now to FIG. 5, this is accomplished by a crooked end portion 60 of the outer annular leg 28 which forns an annular recess 62.
- the recess is formed of a generally vertical wall 64 extending from the end of the outer annular leg to a slanted wall 66 which is contiguous with the cam follower surface 22.
- the diarnetral dimension from one point on the wall 64 to a point opposite is slightly larger than the diametral dimension of the surface 68 of the bead 16.
- a tamper-proof closure adapted to close an open end of a container body comprising:
- a peripheral channel comprising a base portion, an outer annular leg attached to an outer edge of said base portion and extending downwardly therefrom, an inner annular leg attached to an inner edge of said base portion and extending downwardly therefrom, said center portion being attached to a lower edge of said inner annular leg, and an annular flexible sealing leg attached to said base portion and extending downwardly therefrom, said annular flexible sealing leg being positioned between said inner and said outer annular legs, a plurality of openings spaced about said outer annular leg, a lower edge of said outer annular leg being continuous about said outer annular leg and said lower edge being severable at said plurality of openings to facilitate removal of said closure; and
- annular flexible leg has a plurality of recessed portions extending from an end of said flexible leg toward said base portion and spaced about a surface of the flexible leg facing said outer annular leg whereby during the engagement of said closure and said container body compressed gas may escape along said recessed portion.
- a tamper-proof closure adapted to close an open end of a container body comprising:
- a peripheral channel comprising a base portion, an outer annular leg attached to an outer edge of said base portion and extending downwardly therefrom; an inner annular leg attached to an inner edge of said base portion and extending downwardly therefrom, said center portion being integrally formed to a lower edge of said inner annular leg, and an annular flexible sealing leg attached to said base portion and extending downwardly therefrom, said annular flexible sealing leg being positioned between said inner and said outer annular legs;
- annular flexible leg has a plurality of recessed portions extending from an end of said flexible leg toward said base portion and spaced about a surface of the flexible leg facing said outer annular leg whereby during the engagement of said closure and said container body compressed gas may escape along said recessed portion.
- a closure as claimed in claim 7 wherein an end portion of said outer annular leg opposite said base portion is crooked to form a recess for facilitating the centering of said closure upon said open end of said container body.
- a closure as claimed in claim 5 wherein an end portion of said outer annular leg opposite said base portion is crooked to form a recess for facilitating the centering of said closure upon said open end of said container body.
Abstract
A closure having an outer annular leg to engage a bead about the rim of an open container body, an annular flexible sealing leg having spaced recesses to allow compressed gas to escape during the engagement of the closure to the container body and to provide a seal when the engagement is complete, an inner annular leg and a generally flat center portion to compensate for stresses during cooling of the molded closure and to act as a receptacle for a stacked container. The outer annular leg also has an end recess for self centering of the closure upon the container rim.
Description
United States Patent .Yates, Jr. [451 July 18, 1972 541 SELF-CENTERING AND VENTING 3,516,571 6/1970 Roper et al ..220/60 R CLOSURE 2,950,813 8/ 1960 Koones ..220/44 R [72] Inventor: George Yates, Jr., Glendale, Calif. Primary Examiner seorge Hall [73] Assign; Growth International Industries Corp" Attorney-Ronald L. Engel, Daniel W. Vittum, Jr., John A.
Cleveland, Ohio 9mr W: Walters an 9 Golan [22] Filed: Aug. 24, 1970 ABSTRACT [21] Appl. No.: 66,529 e A closure having an outer annular leg to engage a bead about Related Applicatmn Dan the rim of an open container body, an annular flexible sealing [63] Continuation-impart of Ser. No. 883,694, Dec. 10, leg Paving spaced recesses to allow compressed gas t escape 1969 abandoned durmg the engagement of the closure to the container body and to provide a seal when the engagement is complete, an
inner annular leg and a generally flat center portion to com- [52] U.S. Cl 22 2211547506 pensate for messes during cooling of the molded closure and B65d 41 22 to act as a receptacle for a stacked container. The outer annula.r leg also has an end recess for self centering of the closure [58] Field of Search ..2l5/4 l 56, 42, 40; 220/60, upon the container rim [56] References Cited 9 Claims 5 Drawing UNITED STATES PATENTS 3,378,177 4/1968 Gran ..220/42 C Patentd July 18, 1972 2 Sheets-Sheet l Patented July 18, 1972 3,677,430
2 Sheets-Sheet 2 v SELF-CEN'IERING AND VENTING CImURE CROSS-REFERENCE TO RELATED APPLICATION BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the container closure art and, more particularly, to a closure having a flexible sealing member, recesses for venting, a recess for self-centering on the container and a recess for providing a stable stacking base.
2. Description of the Prior Art The use of synthetic resin closures and containers has increased rapidly within the last few years. This wider spread use has pointed out deficiencies in the prior art closure structure; to obviate the deficiencies further development was required. For example, there has always existed a sealing problem and the lack of an economical solution to the problem. Further, it had been found that when a closure was lockingly engaged to a container by machine, air in the space above the contents of the container became compressed causing the closure and/or container to bellow outwardly. Still further deficiency related to the difficulty of properly aligning a container and a closure to allow a machine to apply the engagement force. Finally, there was a stability problem for stacked, sealed containers when in storage and/or during transportation.
SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems by providing a tamper proof closure adapted to close an open end of a container body comprising a center portion; a peripheral channel connected to the center portion and having a base portion from which extends an outer annular leg, an inner annular leg, and an annular flexible sealing leg, the annular flexible sealing leg being positioned between the inner and the outer annular legs; and means connected to the peripheral channel adapted to lockingly engage the open end of the container body whereby the open end of the container body is receivable between the outer annular leg and the annular flexible sealing leg, and the annular flexible sealing leg is adapted to abut the end of said container body and flex to form at least a partial seal about the open end.
An object of the present invention is to provide a closure which is self-sealing.
Another object of the present invention is to provide a closure which allows compresed gas, such as air, to escape from the space in a container body above the contents within the container body when the closure is engaged to the container body.
Still another object of the present invention is to provide a closure which is self-centering on a container body to facilitate engagement of the closure to the container body, especially when the closure is handled by a machine during the engagement process.
Yet another object of the present invention is to provide a closure which will act as a receptacle for the bottom portion of another container so that stable stacking of a multiple number of sealed containers is achievable.
Another object of the present invention is to provide a container having all of the four above-mentioned features in a single closure embodiment.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an elevational view of a container body with a closure in locking engagement partially broken away to illustrate the contents of the container.
FIG. 2 is an enlarged elevational sectional view of a portion of a container body and a closure in a partially engaged position and featuring a gas escape route.
FIG. 3 is a bottom view of a portion of the closure of FIGS. I and 2.
FIG. 4 is an enlarged sectional view of the closure sealed to the container body taken along line 4-4 of FIG. 1 including an illustration of a bottom portion of another container body stacked upon the closure.
FIG. 5 is an enlarged elevational sectional view similar to that shown in FIG. 2 illustrating the self-centering feature of the closure.
DESCRIPTION OF THE PREFERRED EMBODIMENTS While the present invention is susceptible of various modifications and alternative constructions, an illustrative embodiment is shown in the drawings and will herein be described in detail. It should be understood, however, that it is not the intention to limit the invention to the particular form disclosed, but, on the contrary, the intention is to cover all modifications, equivalents, and alternative constructions falling within the spirit and scope of the invention as expressed in the appended claims.
Referring now to FIG. 1, there is illustrated a closed container 10 comprised of a container body 12 and a closure 14. A liquid content 16 is within the container body 12, though it is to be understood that the container may be used to enclose any suitable product whether liquid or solid. The container body and the closure are preferably constructed of a synthetic resin material, though metals or glasses may be selectively used. A suitable synthetic resin material is polyethylene having a density ranging between 0.941 and 0.965 grams per cubic centimeter (ASTM Test D-l505 63T) and a melt index ranging between 0.1 and 25.0 (ASTM Test D-l 238 -62T). When the latter-mentioned polyethylene is employed in producing an injection molded closure, the melt index preferably lies between 4.0 and 25.0. It is, of course, to be understood that the closure member may be constructed or fabricated from various other suitable materials and by any one of a variety of manufacturing processes.
As shown, the container body 12 is generally cylindrical having a slight taper of about 2 degrees. The closure 14 conform to the container body.
Referring now to FIG. 4, there is illustrated in more detail the various portions of the closure and the locking engagement between the closure and the container body. About the open end of the container body is a bead 16 which extends in an outward direction away from the interior of the container. The head includes a cam surface 18 and an abuttment surface 20 which act in conjunction with a cam follower surface 22 and an abuttment surface 24, respectively, of the closure to cause the locking engagement of the closure and the container body. The cam follower surface 22 and the abuttment surface 24 are part of an inwardly extending bead 26 which in integral with an annular outer leg 28. The outer leg is connected at one end to a base portion 30 from which an annular inner leg 32 and an annular flexible sealing leg 34 extend. The base portion, the outer annular leg, the inner annular leg, and the annular flexible sealing leg comprise a peripheral channel which receives the bead 16 of the container body between the outer leg and the sealing leg. Connected to the inner annular leg 32 at an end 36 which is opposite from the base portion is a center portion 38 of the closure. The center portion is generally flat except for a small central recess 40 which is provided to receive a ring 41 of material connected to a bottom portion 43 of a stacked container body.
In accordance with one of the important aspects of the present invention, provision is made for allowing the usually progressively compresed gas pocket formed above the contents of the container to escape during the closure engaging process. This prevents the closure and/or container body from bellowing outwardly and provides a generally more stable container. Referring now to FIGS. 2 and 3, the closure is partially engaged to the bead 16 of the container body. The term partially engag is used to mean that the abuttment surface 24 of the bead 26 on the closure has not yet come in contact with the abuttment surface 20 of the bead 16. Thus in FIG. 2 the cam surface 18 is shown to have forced the cam follower surface 22 outwardly so as to cause the leg 28 to have a bowed or generally arcuate configuration. Meanwhile, the annular flexible sealing leg 34 abuts the interior surface 42 of the container body and is flexed thereby. Spaced along the flexible sealing leg is a plurality of recesses 44 which provide a passageway for the escape of gas or air within the spacing 46. It is to be understood that the liquid content 16 has a level slightly below the region to be occupied by the closure. When a machine is used to apply the engaging force to the closure, the machine applies the force equally around the peripheral channel. Gas occupying the space between the liquid content and the bead of the container body would ordinarily be progressively compressed as the closure and container body engaged. This causes an unnecessary stress on the container body and the closure. By providing the recesses 44 in the flexible leg extending from an end 48 of the flexible leg(which is opposite the end of the flexible sealing leg connected to the base portion 30) the compressed gas is allowed to escape upwardly along the interior surface 42 over the bead 16 and then through one of a plurality of apertures 50 (FIG. 1). As fully disclosed in the abovementioned copending application, the apertures are also provided to allow separation of the closure from the container.
It is noted in FIG. 4 that when the closure and the container body are in their locked, engaged position, the interior surface 42 of the container body extends beyond the recesses 44 so that the annular flexible sealing leg acts m a seal. This is so even though during the engagement process gas is allowed to escape. The sealing provided by the flexible sealing leg is enhanced because the sealing leg is of a guage sufficiently flexible to allow the leg to conform to the sloping interior surface of the container body. It is preferred that the closure be made of a material having a memory, that is, any distortion of an element will establish a biasing force tending to return the element to its original position. Thus, the flexing of the sealing leg by the interior surface of the container body establishes a biasing force in the sealing leg attempting to return the sealing leg to its original position. (In FIG. 4, the original position is shown in phantom line while the flexed position is shown in solid line.) This biasing force increases the sealing abuttment between the sealing leg and the interior surface of the container body. In the fully engaged locking position, additional scaling is accomplished by providing a hollow O-ring seal 52 in the space between the bead 16 and the base portion 30. The Oring is compressed when the closure and the container body are fully engaged to substantially fill the space and provide a hermetic sea].
In accordance with another major aspect of the present invention, the closure is constructed to allow stable stacking of one container upon another. This is achieved partially by venting the compressed gases so as to prevent the closure or the container body from bellowing outwardly under the increased pressure and partly by the structural form of the closure. Referring once again to FIG. 4, the inner annular leg 32 and the center portion 38 form a generally cylindrical receptacle to receive the bottom portion 43 of a container body which has been stacked upon the closure. The inner annular leg has a diametrical dimension slightly larger than the diameter of the bottom portion of the stacked container so that an abuttment retainer is achieved. The inner annular leg and center portion also provide a non-warped platform contributing to stable stacking of a large number of containers. This latter quality is achieved by the hinging or connection of the inner annular leg In accordance with still another important aspect of the present invention, provision is made for facilitating centering of the closure upon the open end of the container. This is important when the closure is engaged to the container body by machine. Most machines are designed to apply a closure force in a downward direction and cannot laterally orient the closure relative the container body. The present invention provides for the self centering of the closure on the container body. Referring now to FIG. 5, this is accomplished by a crooked end portion 60 of the outer annular leg 28 which forns an annular recess 62. The recess is formed of a generally vertical wall 64 extending from the end of the outer annular leg to a slanted wall 66 which is contiguous with the cam follower surface 22. The diarnetral dimension from one point on the wall 64 to a point opposite is slightly larger than the diametral dimension of the surface 68 of the bead 16. Thus, if the closure is placed upon the container slightly off center, downward pressure upon the closure will tend to bring the slanted surface 66 into contact with the cam surface 18 of the bead 16. Of course, if this downward force is increased and continued, the annular outer leg 28 will tend to be moved outwardly as the cam surface 18 engages the cam follower surface 22. More succinctly, the slanted surface 66 acts as a funnel to guide the position of the closure relative the bead of the container body.
What is claimed is:
1. A tamper-proof closure adapted to close an open end of a container body comprising:
a center portion;
a peripheral channel comprising a base portion, an outer annular leg attached to an outer edge of said base portion and extending downwardly therefrom, an inner annular leg attached to an inner edge of said base portion and extending downwardly therefrom, said center portion being attached to a lower edge of said inner annular leg, and an annular flexible sealing leg attached to said base portion and extending downwardly therefrom, said annular flexible sealing leg being positioned between said inner and said outer annular legs, a plurality of openings spaced about said outer annular leg, a lower edge of said outer annular leg being continuous about said outer annular leg and said lower edge being severable at said plurality of openings to facilitate removal of said closure; and
means connected to said peripheral channel adapted to lockingly engage the open end of said container body whereby the open end of said container body is receivable between said outer annular leg and said annular flexible sealing leg and said annular flexible sealing leg is adapted to abut the end of said container body and flex to form at least a partial seal about said open end.
2. A closure as claimed in claim 1 wherein said annular flexible leg has a plurality of recessed portions extending from an end of said flexible leg toward said base portion and spaced about a surface of the flexible leg facing said outer annular leg whereby during the engagement of said closure and said container body compressed gas may escape along said recessed portion.
3. A closure as claimed in claim 2 wherein said center portion is connected to an end of said inner annular leg whereby said center portion and said inner annular leg form a receptacle to receive a bottom end of a stacked container body.
4. A closure as claimed in claim 1 wherein an end portion of said outer annular leg opposite said base portion is crooked to form a recess for facilitating the centering of said closure upon said open end of said container body.
5. A tamper-proof closure adapted to close an open end of a container body comprising:
a center portion;
a peripheral channel comprising a base portion, an outer annular leg attached to an outer edge of said base portion and extending downwardly therefrom; an inner annular leg attached to an inner edge of said base portion and extending downwardly therefrom, said center portion being integrally formed to a lower edge of said inner annular leg, and an annular flexible sealing leg attached to said base portion and extending downwardly therefrom, said annular flexible sealing leg being positioned between said inner and said outer annular legs;
a projecting bead integral with said outer annular leg and extending toward said annular flexible sealing leg, said head being spaced apart from an end of said outer annular leg opposite the base and said bead including a cam follower surface and an abutment surface; and
a plurality of openings spaced about said closure in said annular outer leg, an end portion of said outer annular leg opposite said base being continuous about said closure said end portion of said outer annular leg being severable at said plurality of openings to facilitate removal of said closure, whereby the open end of said container body is receivable between said outer annular leg and said armular flexible sealing leg and said annular flexible sealing leg is adapted to abut the end of said container body and flex to form at least a partial seal about said open end.
6. A closure as claimed in claim 5 wherein said annular flexible leg has a plurality of recessed portions extending from an end of said flexible leg toward said base portion and spaced about a surface of the flexible leg facing said outer annular leg whereby during the engagement of said closure and said container body compressed gas may escape along said recessed portion.
7. A closure as claimed in claim 6 wherein said center portion is connected to an end of said inner annular leg whereby said center portion and said inner annular leg form a receptacle to receive a bottom end of a stacked container body.
8. A closure as claimed in claim 7 wherein an end portion of said outer annular leg opposite said base portion is crooked to form a recess for facilitating the centering of said closure upon said open end of said container body.
9. A closure as claimed in claim 5 wherein an end portion of said outer annular leg opposite said base portion is crooked to form a recess for facilitating the centering of said closure upon said open end of said container body.
I i t
Claims (9)
1. A tamper-proof closure adapted to close an open end of a container body comprising: a center portion; a peripheral channel comprising a base portion, an outer annular leg attached to an outer edge of said base portion and extending downwardly therefrom, an inner annular leg attached to an inner edge of said base portion and extending downwardly therefrom, said center portion being attached to a lower edge of said inner annular leg, and an annular flexible sealing leg attached to said base portion and extending downwardly therefrom, said annular flexible sealing leg being positioned between said inner and said outer annular legs, a plurality of openings spaced about said outer annular leg, a lower edge of said outer annular leg being continuous about said outer annular leg and said lower edge being severable at said plurality of openings to facilitate removal of said closure; and means connected to Said peripheral channel adapted to lockingly engage the open end of said container body whereby the open end of said container body is receivable between said outer annular leg and said annular flexible sealing leg and said annular flexible sealing leg is adapted to abut the end of said container body and flex to form at least a partial seal about said open end.
2. A closure as claimed in claim 1 wherein said annular flexible leg has a plurality of recessed portions extending from an end of said flexible leg toward said base portion and spaced about a surface of the flexible leg facing said outer annular leg whereby during the engagement of said closure and said container body compressed gas may escape along said recessed portion.
3. A closure as claimed in claim 2 wherein said center portion is connected to an end of said inner annular leg whereby said center portion and said inner annular leg form a receptacle to receive a bottom end of a stacked container body.
4. A closure as claimed in claim 1 wherein an end portion of said outer annular leg opposite said base portion is crooked to form a recess for facilitating the centering of said closure upon said open end of said container body.
5. A tamper-proof closure adapted to close an open end of a container body comprising: a center portion; a peripheral channel comprising a base portion, an outer annular leg attached to an outer edge of said base portion and extending downwardly therefrom; an inner annular leg attached to an inner edge of said base portion and extending downwardly therefrom, said center portion being integrally formed to a lower edge of said inner annular leg, and an annular flexible sealing leg attached to said base portion and extending downwardly therefrom, said annular flexible sealing leg being positioned between said inner and said outer annular legs; a projecting bead integral with said outer annular leg and extending toward said annular flexible sealing leg, said bead being spaced apart from an end of said outer annular leg opposite the base and said bead including a cam follower surface and an abutment surface; and a plurality of openings spaced about said closure in said annular outer leg, an end portion of said outer annular leg opposite said base being continuous about said closure said end portion of said outer annular leg being severable at said plurality of openings to facilitate removal of said closure, whereby the open end of said container body is receivable between said outer annular leg and said annular flexible sealing leg and said annular flexible sealing leg is adapted to abut the end of said container body and flex to form at least a partial seal about said open end.
6. A closure as claimed in claim 5 wherein said annular flexible leg has a plurality of recessed portions extending from an end of said flexible leg toward said base portion and spaced about a surface of the flexible leg facing said outer annular leg whereby during the engagement of said closure and said container body compressed gas may escape along said recessed portion.
7. A closure as claimed in claim 6 wherein said center portion is connected to an end of said inner annular leg whereby said center portion and said inner annular leg form a receptacle to receive a bottom end of a stacked container body.
8. A closure as claimed in claim 7 wherein an end portion of said outer annular leg opposite said base portion is crooked to form a recess for facilitating the centering of said closure upon said open end of said container body.
9. A closure as claimed in claim 5 wherein an end portion of said outer annular leg opposite said base portion is crooked to form a recess for facilitating the centering of said closure upon said open end of said container body.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US6652970A | 1970-08-24 | 1970-08-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3677430A true US3677430A (en) | 1972-07-18 |
Family
ID=22070096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US66529A Expired - Lifetime US3677430A (en) | 1970-08-24 | 1970-08-24 | Self-centering and venting closure |
Country Status (1)
Country | Link |
---|---|
US (1) | US3677430A (en) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3817419A (en) * | 1972-02-22 | 1974-06-18 | Continental Can Co | Latch to secure a closure on a container |
DE2544491A1 (en) * | 1975-10-04 | 1977-04-14 | Mauser Kg | LID BARREL |
EP0046880A1 (en) * | 1980-08-28 | 1982-03-10 | Kunststoffwerk Eugen Saier GmbH & Co. | Container and closure therefor |
US4674644A (en) * | 1983-11-02 | 1987-06-23 | Jacobs Stanley A | Container and lid |
US4844273A (en) * | 1988-09-06 | 1989-07-04 | Sunbeam Plastics Corporation | Closure with enhanced sealing |
US4896782A (en) * | 1989-02-13 | 1990-01-30 | Sunbeam Plastics Corporation | Closure with insert for enhanced sealing |
FR2643877A1 (en) * | 1989-03-06 | 1990-09-07 | Astra Plastique | Closing assembly for can |
US5060813A (en) * | 1989-09-13 | 1991-10-29 | Bayer Aktiengesellschaft | Container with a screw-cap closure |
US5211289A (en) * | 1989-09-27 | 1993-05-18 | Irving Oil Limited | Removable lid |
US5335807A (en) * | 1992-02-27 | 1994-08-09 | Scientific Ecology Group, Inc. | Security lock for enclosure |
US5660295A (en) * | 1995-03-06 | 1997-08-26 | Gpe Controls, Inc. | Covers for gauging and sampling openings |
US5785201A (en) * | 1996-05-02 | 1998-07-28 | Container Accessories, Inc. | Molded lid with wave configured central portion |
US5862953A (en) * | 1996-04-16 | 1999-01-26 | International Plastics And Equipment Corporation | Tamper evident push-pull closure with pour spout |
GB2340824A (en) * | 1998-08-21 | 2000-03-01 | Dolphin Packaging Materials | Container assembly |
US6227401B1 (en) * | 1999-02-12 | 2001-05-08 | L&P Property Management Company | Rag bucket |
US6435376B1 (en) * | 1992-05-22 | 2002-08-20 | Dispensing Patents International Llc. | Container with snap-on neck |
GB2412654A (en) * | 2004-03-31 | 2005-10-05 | Oliver Clemens Robert Kratzer | Lid with spoon |
US7228979B2 (en) | 1997-10-30 | 2007-06-12 | International Plastics And Equipment Corp. | Snap-on screw-off closure with retaining member for tamper-indicating band |
US20080251515A1 (en) * | 2007-04-12 | 2008-10-16 | Baughman Gary M | Container and lid combination with a sealing gasket and closing ring |
US20140158684A1 (en) * | 2004-11-23 | 2014-06-12 | Arrow Innovations, Llc | Container Closure With Segmented Fusion Ring |
US11505371B2 (en) | 2015-10-23 | 2022-11-22 | Husky Injection Molding Systems Ltd. | Containers and closures |
US11639252B2 (en) | 2020-03-16 | 2023-05-02 | Helen Of Troy Limited | Container with venting or multiple sealing feature |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2950813A (en) * | 1958-01-08 | 1960-08-30 | Chemway Corp | Package |
US3378177A (en) * | 1966-09-23 | 1968-04-16 | John R Scherer Co Inc | Food container with plural openings |
US3516571A (en) * | 1968-08-02 | 1970-06-23 | William H Roper | Container and cover therefor |
-
1970
- 1970-08-24 US US66529A patent/US3677430A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2950813A (en) * | 1958-01-08 | 1960-08-30 | Chemway Corp | Package |
US3378177A (en) * | 1966-09-23 | 1968-04-16 | John R Scherer Co Inc | Food container with plural openings |
US3516571A (en) * | 1968-08-02 | 1970-06-23 | William H Roper | Container and cover therefor |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3817419A (en) * | 1972-02-22 | 1974-06-18 | Continental Can Co | Latch to secure a closure on a container |
DE2544491A1 (en) * | 1975-10-04 | 1977-04-14 | Mauser Kg | LID BARREL |
EP0046880A1 (en) * | 1980-08-28 | 1982-03-10 | Kunststoffwerk Eugen Saier GmbH & Co. | Container and closure therefor |
US4674644A (en) * | 1983-11-02 | 1987-06-23 | Jacobs Stanley A | Container and lid |
US4844273A (en) * | 1988-09-06 | 1989-07-04 | Sunbeam Plastics Corporation | Closure with enhanced sealing |
US4896782A (en) * | 1989-02-13 | 1990-01-30 | Sunbeam Plastics Corporation | Closure with insert for enhanced sealing |
FR2643877A1 (en) * | 1989-03-06 | 1990-09-07 | Astra Plastique | Closing assembly for can |
US5060813A (en) * | 1989-09-13 | 1991-10-29 | Bayer Aktiengesellschaft | Container with a screw-cap closure |
US5211289A (en) * | 1989-09-27 | 1993-05-18 | Irving Oil Limited | Removable lid |
US5335807A (en) * | 1992-02-27 | 1994-08-09 | Scientific Ecology Group, Inc. | Security lock for enclosure |
US6435376B1 (en) * | 1992-05-22 | 2002-08-20 | Dispensing Patents International Llc. | Container with snap-on neck |
US5660295A (en) * | 1995-03-06 | 1997-08-26 | Gpe Controls, Inc. | Covers for gauging and sampling openings |
US5862953A (en) * | 1996-04-16 | 1999-01-26 | International Plastics And Equipment Corporation | Tamper evident push-pull closure with pour spout |
US5785201A (en) * | 1996-05-02 | 1998-07-28 | Container Accessories, Inc. | Molded lid with wave configured central portion |
US7228979B2 (en) | 1997-10-30 | 2007-06-12 | International Plastics And Equipment Corp. | Snap-on screw-off closure with retaining member for tamper-indicating band |
GB2340824A (en) * | 1998-08-21 | 2000-03-01 | Dolphin Packaging Materials | Container assembly |
GB2340824B (en) * | 1998-08-21 | 2002-09-04 | Dolphin Packaging Materials Lt | Container assembly |
US6227401B1 (en) * | 1999-02-12 | 2001-05-08 | L&P Property Management Company | Rag bucket |
GB2412654A (en) * | 2004-03-31 | 2005-10-05 | Oliver Clemens Robert Kratzer | Lid with spoon |
US20140158684A1 (en) * | 2004-11-23 | 2014-06-12 | Arrow Innovations, Llc | Container Closure With Segmented Fusion Ring |
US20080251515A1 (en) * | 2007-04-12 | 2008-10-16 | Baughman Gary M | Container and lid combination with a sealing gasket and closing ring |
US11505371B2 (en) | 2015-10-23 | 2022-11-22 | Husky Injection Molding Systems Ltd. | Containers and closures |
US11801976B2 (en) | 2015-10-23 | 2023-10-31 | Husky Injection Molding Systems Ltd. | Containers and closures |
US11639252B2 (en) | 2020-03-16 | 2023-05-02 | Helen Of Troy Limited | Container with venting or multiple sealing feature |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3677430A (en) | Self-centering and venting closure | |
US3568871A (en) | Closure cap | |
US3840152A (en) | Sealable and resealable container | |
US3384265A (en) | Container lid | |
US3608771A (en) | Disposable pressure container | |
US3637102A (en) | Closures for aseptic filled containers | |
US3934725A (en) | Nestable article | |
US2969887A (en) | Threaded pouring lip stopper combination for vacuum bottle | |
US5096083A (en) | Polyethylene shipping drum | |
US3967731A (en) | Stackable lid and container | |
US3485412A (en) | Stackable plastic container | |
US3339786A (en) | Container and venting closure cap for same | |
US2911128A (en) | Spout and cap for a container | |
US4311238A (en) | Closure and a package employing the closure | |
US3558001A (en) | Thermoplastic container | |
US2350950A (en) | Fibrous, covered container | |
US5320236A (en) | Plastic container package with linerless sealing closure system | |
US3809280A (en) | Closures for containers | |
NO132755B (en) | ||
US3749276A (en) | Container and closure | |
US5975338A (en) | Drum with improved emptying feature | |
US4544074A (en) | Tapered and flanged rubber stopper | |
US3994410A (en) | Plastic bottle cap | |
US4429802A (en) | Linerless closure cap | |
GB1324660A (en) | Container with lid for liquids especially carbonized beverages |