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Publication numberUS3346170 A
Publication typeGrant
Publication dateOct 10, 1967
Filing dateMay 26, 1966
Priority dateMay 26, 1966
Publication numberUS 3346170 A, US 3346170A, US-A-3346170, US3346170 A, US3346170A
InventorsPaul H Carter
Original AssigneeMaryland Cup Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Lid construction
US 3346170 A
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Description  (OCR text may contain errors)

Oct. 10,1967 P. H. CARTER 3,346,170

LID CONSTRUCTION Filed May 26, 1966 SMITH- SMITH CH O C O L AT E C-HOC O L ATE ICE CREAM ICE CREAM 'FlG.l. a

PRIOR ART FIG. 3.

INVENTOR PAUL H. C ARTER gr kjkr I My,

ATTORNEY United States Patent 3,346,170 LID CONSTRUCTION Paul H. Carter, Baltimore, Md., assignor to Maryland Cup Corporation, Owings Mills, Md., a corporation of Maryland Filed May 26, 1966, Ser. No. 553,129 1 Claim. (Cl. 22943) ABSTRACT OF THE DISCLOSURE To reduce the amount of materials of which a lid is made and also to reduce the overall height of the lid by about 25 percent, while retaining all of its essential functional characteristics, there is provided an improved lid construction in which an annular rimmed bead at one end of a tubular member is restricted to a form in which an outer marginal edge is folded completely under an adjacent portion of the bead at right angles to the wall of the tubular member. A disc member restricted to a flat flangeless form is attached at its marginal edges to the outer marginal edge of the bead with an adhesive material.

This invention relates to lids and it is more particularly concerned with the construction of lids adapted to fit conventional containers commercially used to hold products, such as ice cream, cottage cheese, sour cream, and solids and liquids generally of various kinds.

An object of the invention is the provision of a lid which is functionally identical to conventional types of lids, but which is simpler in construction and easier to manufacture than the conventional types.

Another object is the provision of such a lid which requires substantially less material to construct, thereby effecting a saving in the material, but without sacrificing functional requirements.

These and still further objects and advantages of the invention will appear more fully from the following description considered together with the accompanying drawing.

In the drawing:

FIGS. 1 and 1a are top plan views, respectively, of a conventional form of lid and an embodiment of the present invention.

FIGS. 2 and 2a are bottom plan views of the same lids, respectively, of FIGS. 1 and 1a.

FIGS. 3 and 3a are side elevational views of the same lids.

FIGS. 4 and 4a are vertical sectional views along the line 44 and 4a4a of FIGS. 1 and 1a, respectively, on an enlarged scale, partly broken away, and arranged in side by side relation on the sheet to illustrate the dilferences clearly.

Conventional lids of the type illustrated in FIGS. 1, 2, 3 and 4 comprises a tube 11 of stiif cardboard. One

Patented Oct. 10, 1967 end of the tube contains a disc 12 having an annular flange 13 disposed in an annular pocket 14 formed by a reversely curved skirt portion 15 at one end of the tube. The flange 13 is usually secured to the skirt portion 15 by crimping with means well known to the art. Such means comprise machinery which is expensive to construct and operate. This type of lid is also wasteful of material due to different factors hereinafter explained.

According to the present invention, the lid can easily and less expensively be made by eliminating the flange 13, eliminating a substantial portion of the skirt 15, leaving only enough to form a bead 16, and then sealing the marginal edge of a disc 17 to the bottom of the bead by means of a suitable material, such as an adhesive resin 18. Polyethylene resin has been found suitable for this purpose. It is a thermosetting resin, can be applied in a liquid form, and then hardened by the application of heat, such as by a hot iron (not shown), a procedure well known in the art. Polyvinyl acetate is also suitable for use in the same way.

The resulting lid has an inside depth equal to that of the conventional lid, yet less material is used. Compare FIG. 4 with 40 and 3 with 3a.

The seal between the disc and the bead is even more effective than the seal formed by the crimping of overlapped portions of conventional lids.

Surplus portions of the conventional type of lid comprise the parts a, b and c which total about 25% of the material of which the lid is made and which is saved by the present construction. This is substantial in a field where the cost of production is an important factor and the materials used are relatively expensive to make, transport and store.

I claim:

In a lid construction comprising a tubular member having an annular wall, a rim bead at one end and a disc secured to the bead, the improvement consisting of restricting the bead to a form in which an outer marginal edge is folded completely under an adjacent portion of the bead at right angles to the wall of the tubular member, said disc being restricted to a flat flangeless form, said disc being attached at its marginal edge to the said outer marginal edge of the head with an adhesive material, thereby reducing the amount of materials of which the lid is made and reducing also the overall height of the lid while retaining all of its essential functional characteristics.

References Cited UNITED STATES PATENTS 2,132,206 10/1938 Di Domenico et al. 22943 X 2,446,422 8/1948 Jensen 22943 X 2,967,652 1/ 1961 Canfield et al. 22943 X JOSEPH R. LECLAIR, Primary Examiner. DAVID M. BOCKENEK, Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2132206 *Jan 4, 1938Oct 4, 1938Di Domenico AnthonyContainer top
US2446422 *Apr 2, 1946Aug 3, 1948Niemand Bros IncContainer
US2967652 *Nov 7, 1958Jan 10, 1961Ekco Alcoa Containers IncFoil cup and package and method of producing same
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4044484 *Aug 6, 1976Aug 30, 1977Maryland Cup CorporationLong-skirted paper and plastic lid for food containers and the like
US4190189 *Apr 17, 1978Feb 26, 1980Phillips Petroleum Co.Closure member for a container
US4432473 *Feb 24, 1981Feb 21, 1984Sealright Co., Inc.Cartridge-type dispenser
US4944435 *May 8, 1989Jul 31, 1990James LeeDisposable seasoning or condiment dispenser
US5400917 *Dec 30, 1993Mar 28, 1995Stanton; Steven W.Box Construction and method
US7281649 *Nov 19, 2004Oct 16, 2007Solo Cup Operating CorporationBottom seal for container
Classifications
U.S. Classification229/125.19, 277/922, 229/125.17, 229/5.5, 277/637
International ClassificationB65D3/10
Cooperative ClassificationB65D3/10, Y10S277/922
European ClassificationB65D3/10
Legal Events
DateCodeEventDescription
Sep 8, 1993ASAssignment
Owner name: SWEETHEART CUP COMPANY INC., ILLINOIS
Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:BANKERS TRUST COMPANY, AS COLLATERAL AGENT;REEL/FRAME:007029/0011
Effective date: 19930830
Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:BANKERS TRUST COMPANY, AS COLLATERAL AGENT;REEL/FRAME:006687/0491
Apr 6, 1990ASAssignment
Owner name: SWEETHEART CUP COMPANY INC.
Free format text: CHANGE OF NAME;ASSIGNOR:FORT HOWARD CUP CORPORATION;REEL/FRAME:005346/0001
Effective date: 19891129
Feb 13, 1990ASAssignment
Owner name: BANKERS TRUST COMPANY, AS COLLATERAL AGENT
Free format text: SECURITY INTEREST;ASSIGNOR:FORT HOWARD CUP CORPORATION;REEL/FRAME:005287/0404
Effective date: 19891114
Owner name: FORT HOWARD CUP CORPORATION
Free format text: CHANGE OF NAME;ASSIGNOR:LILY-TULIP, INC.;REEL/FRAME:005300/0320
Effective date: 19861231
Owner name: LILY-TULIP, INC., A CORP. OF DE
Free format text: MERGER;ASSIGNOR:SWEETHEART HOLDING CORP.;REEL/FRAME:005284/0457
Owner name: MARYLAND CUP CORPORATION
Free format text: MERGER;ASSIGNOR:MARYLAND CUP CORPORATION, A CORP. OF MD (MERGED INTO) MC ACQUISITION CORP., A CORP.OF MD (CHANGED TO);REEL/FRAME:005284/0423
Effective date: 19830831
Owner name: SWEETHEART HOLDING CORP.
Free format text: CHANGE OF NAME;ASSIGNOR:MARYLAND CUP CORPORATION;REEL/FRAME:005284/0418
Effective date: 19841231