US3749276A - Container and closure - Google Patents

Container and closure Download PDF

Info

Publication number
US3749276A
US3749276A US3749276DA US3749276A US 3749276 A US3749276 A US 3749276A US 3749276D A US3749276D A US 3749276DA US 3749276 A US3749276 A US 3749276A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
lid
container
shoulder
upper shoulder
protuberances
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
Application number
Inventor
P Davis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Solo Cup Operating Corp
Original Assignee
SWEETHEART PLASTICS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • 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
    • B65D1/00Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/22Boxes or like containers with side walls of substantial depth for enclosing contents
    • B65D1/26Thin-walled containers, e.g. formed by deep-drawing operations
    • 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
    • B65D77/00Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10Container closures formed after filling
    • B65D77/20Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2004Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being maintained on the container by mechanical means, e.g. crimping, clamping, riveting
    • B65D77/2016Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being maintained on the container by mechanical means, e.g. crimping, clamping, riveting the cover being maintained by projections or recesses on the container

Abstract

A thin wall plastic container having a rim-type nesting ring which also serves as a lid seat and includes protuberances spaced about the rim for centering a paper tab-type lid so that it may be snapped in place into the lid seat merely by the application of downward pressure.

Description

ilted States avis [111 3,749,276 July 31, 1973 CONTAINER AND CLOSURE [75] Inventor: Paul Davis, Swampscott, Mass.

[73] Assignee: Sweetheart Plastics, Inc.,

Wilmington, Mass.

221 Filed: Jan. 14,1910

[21] Appl. No.: 2,792

[52] US. Cl. 220/60 R, 220/97 C, 229/43 [51] Int. Cl. .Q 865d 39/02, 865d 21/02 [58] Field 01 Search 220/60 R, 97 C;

[56] Relerenees Cited UNITED STATES PATENTS 2,767,754 10/1956 Lederer 215/51 X 3,353,707 11/1967 Eyles 229/51 B X FOREIGN PATENTS OR APPLICATIONS 882,414 6/1943 France 215/51 Primary Examiner-George E. Lowrance Attorney-Wolf, Greenfield and Sacks [57] ABSTRACT A thin wall plastic container having a rim-type nesting ring which also serves as a lid seat and includes protuberances spaced about the rim for centering a paper tab-type lid so that it may be snapped in place into the lid seat merely by the application of downward pressure.

4 Claims, 4 Drawing Figures PAIENIED JUL3 i mu FIG. I

INVENTOR PAUL DAVIS ATTORNEYS CONTAINER AND CLOSURE This invention relates to thin wall disposable plastic containers and more particularly comprises a container having a combination lid seat and nesting ring with centering means provided on the rim for orienting a paper tab-type lid.

Thin wall plastic containers having lid seats adjacent the container rim are often provided with a pilot above the lid seat to center the lid so that it can be snapped into the lid seat merely by the application of downward pressure on the lid. The pilot prevents the lid from shifting laterally to one side or the other so that proper alignment is always maintained. This is particularly true with containers designed to receive paper tab-type lids.

In the so-called combinationrim-type stacking ring and lid seat arrangements, flat paper tab'lids are not commonly used, particularly with automatic handling equipment because of the lack of means for dependably aligning the thin paper lids with the container so that they can be readily snapped in place. The coverall type of lids ordinarily used with such containers in automatic handling equipment possess enough axial height at their own rim to guide the lid in place so as to establish and maintain proper alignment. The paper tab lids, however, do not have the axial extent of a coverall lid because the paper tab lid lacks any skirt or vertical wall for this purposes. Rather, the paper tab lid is merely as thick as the stock from which it is made, and it provides no readily available means for centering the lid by engagement of its periphery. Therefore, paper tab lids are not commonly used with such containers when automatic handling equipment is employed.

One object of this invention is to provide a ready means for centering a paper tab lid on the rim of a container.

Another object of this invention is to provide guide means on the container rim for centering a lid and which guide means do not interfere with the container use.

To accomplish these and other objects the thin wall plastic contaainer of this invention includes a combination lid seat and rim stacking device having an upper shoulder and a lower shoulder, and protuberances are provided about the upper shoulder, which shoulder is also the container rim, for centering a paper tab lid that is to be used with it.

In the drawing:

FIG. 1 is a fragmentary cross sectional view of a container constructed in accordance with this invention and showing in broken lines the location of the lid before it is snapped in place;

FIG. 2 is a fragmentary plan view of the combination container and lid shown in FIG. 1 and suggesting at section line 1-1 the section of FIG. 1;

FIG. 3 is a fragmentary cross. sectional view of the upper portion of the container-taken along the section line 3--3 of FIG. 2; and

FIG. 4 is a fragmentary cross sectional view showing the manner in which two containers of this invention nest together.

In FIG. I a container C and lid L are shown in their closed relationship to seal the container contents. The container is made of thin sheet plastic material such as polystyrene, and the lid is made of paper. However, the container and lid may be made of other materials.

The one-piece container includes a side wall and a bottom wall 12 joined at the lower corner 14. The

side wall 10 adjacent its rim 16 has a combination lid seat and nesting ring 18 that includes'a lower shoulder 20, an upper shoulder 22, and an intermediate wall 24 composed of a generally vertical section 26, and upwardly and inwardly inclined section 28 and a second vertical section 30. The upper shoulder 22 comprises the lower part of an upwardly and outwardly inclined wall 32 which merges into the rim 16. While the intermediate wall 24 is shown composed of two vertical sections and an upwardly and inwardly inclined intermediate section, it is to be understood that the intermediate wall 24 may take many other forms. It is only necessary that the shoulder 22 and intermediate wall 24 cooperate to form a bead which will retain the lid L on the container and that the maximum diameter of the shoulder 20 be greater than the minimum diameter of the shoulder 22 to afford adequate nesting. These characteristics are described in greater detail below in connection with FIG. 4.

The maximum diameter of the lid L is appreciably greater than the inner diameter of the shoulder 20 so that the lid will not pass below the shoulder and wedge against the side wall 10 below. The shoulder 20 is intended to form a seat for the lid. It will also be noted that the lid L has a diameter which is substantially equal to the maximum inside diameter of the shoulder 20 so that it engages the inner surface of the vertical wall 26 without excess stress.

When the lid L is to be snapped in place on the shoulder 20 in the lid seat 18, it is first placed on the upper shoulder 22 as suggested in FIG. I, and thereafter vertical force is applied to snap the lid by the inner edge of the shoulder 22 and the vertical wall 30 to the shoulder 20. In the absence of some specific means for centering the lid L in place, it is evident that when the lid is in the position shown in broken lines in FIG. 1 it may readily shift from one side to the other so as to lose its concentricity with the lid seat 18. If the lid is not centered above the lid seat, pressure'applied to the lid may cause the lid to buckle and drive one side of the lid through the lid seat and below the shoulder 20 while the other side of the lid remains on the upper shoulder 22. In accordance with this invention, means are provided to center the lid in place on the upper shoulder 22 so that it is aligned with the lid seat and will not bow and seat improperly when capping pressure is applied.

In accordance with this invention a number of spaced protuberances 34 are formed on the upper shoulder wall 32, which protuberances describe a circle at their inner edges having a diameter which exceeds the diameter of the lid L. When the lid L is centered on the shoulder 22, the outer edge 36 of the lid L is spaced from the inner edge 38 of the protuberances 34. This clearance which may typically be approximately 0.030 inch is sufficient to assure that the lid will fall in place on the shoulder 22 when released by automatic feeding equipment, and it is small enough to assure adequate centering of the lid with respect to the lid seat. The spaced protuberances 34 which extend upwardly from the wall 32 at the rim do not extend to the outer edge 40; and therefore, they do not interfere with the rolling of the rim. Thus, if for example helical screws are used as shown in US. Pat. No. 3,355,536 dated Nov. 28, I967 to roll the rim, the protuberances 34 will not interfere with the rim rolling operation.

While the protuberances serve to center the lid in place so that it may be snapped into the seat 18, they do not interfere with proper nesting of the containers when identical containers are stacked as shown in FIG. 4. In FIG. 4 the lower shoulder 20' of the upper container C' rests on the upper shoulder 22 of the lower container C but within the inner edge 38 of the protuberance 34. Similarly, the protuberance 34 on container C will not interfere with the nesting of another container on its shoulder 22' when a third container is added to the stack.

In the embodiment shown approximately 20 protuberances 34 are spaced about the upper shoulder 22 of the container. However, there is nothing critical about that number, and a lesser or greater number may be used, and the protuberances may be larger or smaller in a circumferential direction. It is only necessary that there be a sufficient number so as to serve adequately to center the lid L with respect to the lid seat.

From the foregoing it will be appreciated that a paper lid may be dropped onto the shoulder 22 and the protuberances 34 will serve to retain that lid in a centered position with respect to the lid seat 18. No need exists to continuously engage the periphery of the lid L before capping pressure is applied, and the protuberances although retaining the lid in place before capping do not interfere with nesting.

What is claimed is:

l. A thin wall container comprising a bottom and a side wall,

a lid seat provided adjacent the top of the side wall,

said lid seat being formed as an undercut which terminates at the bottom in a lower shoulder,

a flared rim provided in the side wall immediately abovethe lid seat and having an upwardly and outwardly directed upper shoulder which terminates at the crown of the rim, and

guide means formed on the upper shoulder spaced about the rim for centering a lid to be snapped by the upper shoulder of the lid seat,

said guide means comprising a plurality of spaced upwardly extending protuberances in the upper shoulder.

2. A thin wall, container as described in claim 1 further characterized by said protuberances describing a circle about the flared rim, the diameter of said circle described by the inner edges of the protuberances'being greater than the outer diameter of the lower shoulder.

3. A thin wall, container as described in claim 2 further characterized by the outer diameter of the lower shoulder being substantially greater than the inner diameter of the upper shoulder and together defining a nesting facility in the container.

4. In combination with the container of claim 2,

a flat lid adapted to form a closure for the container, said lid having a diameter less than the diameter of the circle described by the inner edges of the protuberances and greater than the inner diameter of the upper shoulder whereby the lid will sit on the upper shoulder within the protuberances until snapped by the upper shoulder to the lid seat.

Claims (4)

1. A thin wall container comprising a bottom and a side wall, a lid seat provided adjacent the top of the side wall, said lid seat being formed as an undercut which terminates at the bottom in a lower shoulder, a flared rim provided in the side wall immediately above the lid seat and having an upwardly and outwardly directed upper shoulder which terminates at the crown of the rim, and guide means formed on the upper shoulder spaced about the rim for centering a lid to be snapped by the upper shoulder of the lid seat, said guide means comprising a plurality of spaced upwardly extending protuberances in the upper shoulder.
2. A thin wall, container as described in claim 1 further characterized by said protuberances describing a circle about the flared rim, the diameter of said circle described by the inner edges of the protuberances being greater than the outer diameter of the lower shoulder.
3. A thin wall, container as described in claim 2 further characterized by the outer diameter of the lower shoulder being substantially greater than the inner diameter of the upper shoulder and together defining a nesting facility in the container.
4. In combination with the container of claim 2, a flat lid adapted to form a closure for the container, said lid having a diameter less than the diameter of the circle described by the inner edges of the protuberances and greater than the inner diameter of the upper shoulder whereby the lid will sit on the upper shoulder within the protuberances until snapped by the upper shoulder to the lid seat.
US3749276A 1970-01-14 1970-01-14 Container and closure Expired - Lifetime US3749276A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US279270 true 1970-01-14 1970-01-14

Publications (1)

Publication Number Publication Date
US3749276A true US3749276A (en) 1973-07-31

Family

ID=21702529

Family Applications (1)

Application Number Title Priority Date Filing Date
US3749276A Expired - Lifetime US3749276A (en) 1970-01-14 1970-01-14 Container and closure

Country Status (1)

Country Link
US (1) US3749276A (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231476A (en) * 1979-07-02 1980-11-04 Mars Limited Plastics containers
US4495135A (en) * 1982-08-09 1985-01-22 Baxter Travenol Laboratories, Inc. Method for forming container having re-entrant flange
US4550832A (en) * 1979-05-19 1985-11-05 Furnier -U. Sperrholzwerk Stackable box with adjustable cover
US4690272A (en) * 1985-03-22 1987-09-01 Adams Mfg. Container display
US4863094A (en) * 1988-08-08 1989-09-05 Morrow Marvin D Two piece tray
US5029725A (en) * 1987-01-02 1991-07-09 Continental Can Company, Inc. Molded plastic material container
US5105758A (en) * 1990-08-08 1992-04-21 Eastman Kodak Company Catch pan for use in curtain coating apparatus
WO1999035045A1 (en) * 1998-01-07 1999-07-15 Dispensing Containers Corp Resealable easy open closure and can
US20060278168A1 (en) * 2005-06-10 2006-12-14 Behun William G Pet dish and disposable liner
US20090134160A1 (en) * 2004-11-12 2009-05-28 Brasilata S/A Embalagens Metalicas Closure arrangement for a can
US20110272317A1 (en) * 2003-11-11 2011-11-10 Wnek Patrick H Nestable Container With Uniform Stacking Features
US20120045311A1 (en) * 2009-04-22 2012-02-23 Eric Lepot Box for storing, protecting, and transporting containers
US20120279895A1 (en) * 2002-03-15 2012-11-08 Graphic Packaging International, Inc. Container having a rim or other feature encapsulated by or formed from injection-molded material
US20140001183A1 (en) * 2010-09-17 2014-01-02 Nestec Sa Container for retention of shrink wrap
US8858858B2 (en) 2002-03-15 2014-10-14 Graphic Packaging International, Inc. Method of forming container with a tool having an articulated section
US10022932B2 (en) 2010-11-12 2018-07-17 Graphic Packaging International, Llc Container, forming tool, and method for forming a container

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR882414A (en) * 1942-05-28 1943-06-02 Stolzle Grasindustrie Ag hermetic sealing of insert for containers, in particular for glass containers
US2767754A (en) * 1952-02-13 1956-10-23 Frederick E Lederer Plastic container
US3353707A (en) * 1964-11-27 1967-11-21 Foster Grant Co Inc Nestable container

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR882414A (en) * 1942-05-28 1943-06-02 Stolzle Grasindustrie Ag hermetic sealing of insert for containers, in particular for glass containers
US2767754A (en) * 1952-02-13 1956-10-23 Frederick E Lederer Plastic container
US3353707A (en) * 1964-11-27 1967-11-21 Foster Grant Co Inc Nestable container

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4550832A (en) * 1979-05-19 1985-11-05 Furnier -U. Sperrholzwerk Stackable box with adjustable cover
US4231476A (en) * 1979-07-02 1980-11-04 Mars Limited Plastics containers
US4495135A (en) * 1982-08-09 1985-01-22 Baxter Travenol Laboratories, Inc. Method for forming container having re-entrant flange
US4690272A (en) * 1985-03-22 1987-09-01 Adams Mfg. Container display
US5029725A (en) * 1987-01-02 1991-07-09 Continental Can Company, Inc. Molded plastic material container
US4863094A (en) * 1988-08-08 1989-09-05 Morrow Marvin D Two piece tray
US5105758A (en) * 1990-08-08 1992-04-21 Eastman Kodak Company Catch pan for use in curtain coating apparatus
WO1999035045A1 (en) * 1998-01-07 1999-07-15 Dispensing Containers Corp Resealable easy open closure and can
US6193094B1 (en) * 1998-01-07 2001-02-27 George B. Diamond Resealable easy open closure and can
US20120279895A1 (en) * 2002-03-15 2012-11-08 Graphic Packaging International, Inc. Container having a rim or other feature encapsulated by or formed from injection-molded material
US8858858B2 (en) 2002-03-15 2014-10-14 Graphic Packaging International, Inc. Method of forming container with a tool having an articulated section
US9555568B2 (en) 2002-03-15 2017-01-31 Graphic Packaging International, Inc. Container having a rim or other feature encapsulated by or formed from injection-molded material
US9757886B2 (en) 2002-03-15 2017-09-12 Graphic Packaging International, Inc. Container having a rim or other feature encapsulated by or formed from injection-molded material
US9315292B2 (en) 2003-11-11 2016-04-19 Graphic Packaging International, Inc. Nestable container with uniform stacking features
US20110272317A1 (en) * 2003-11-11 2011-11-10 Wnek Patrick H Nestable Container With Uniform Stacking Features
US9725210B2 (en) 2003-11-11 2017-08-08 Graphic Packaging International, Inc. Nestable container with uniform stacking features
US8708148B2 (en) * 2003-11-11 2014-04-29 Graphics Packaging International, Inc. Nestable container with uniform stacking features
US10077134B2 (en) 2003-11-11 2018-09-18 Graphic Packaging International, Llc Nestable container with uniform stacking features
US20090134160A1 (en) * 2004-11-12 2009-05-28 Brasilata S/A Embalagens Metalicas Closure arrangement for a can
US20060278168A1 (en) * 2005-06-10 2006-12-14 Behun William G Pet dish and disposable liner
US7441514B2 (en) * 2005-06-10 2008-10-28 Gail Dana Pet dish and disposable liner
US20070144447A1 (en) * 2005-06-10 2007-06-28 Gail Dana Pet dish and disposable liner
US7204202B2 (en) * 2005-06-10 2007-04-17 Behun William G Pet dish and disposable liner
US8708186B2 (en) * 2009-04-22 2014-04-29 Flexiways S.P.R.L. Box for storing, protecting, and transporting containers
US20120045311A1 (en) * 2009-04-22 2012-02-23 Eric Lepot Box for storing, protecting, and transporting containers
US20140001183A1 (en) * 2010-09-17 2014-01-02 Nestec Sa Container for retention of shrink wrap
US10022932B2 (en) 2010-11-12 2018-07-17 Graphic Packaging International, Llc Container, forming tool, and method for forming a container

Similar Documents

Publication Publication Date Title
US3598271A (en) Combination disposable cup lid and coaster
US3369687A (en) Plastic container
US3288340A (en) Nestable container
US3468447A (en) Unitary cam-off closure
US3520440A (en) Container and closure therefor
US3256977A (en) Filled packaging and dispensing container
US3557995A (en) Upwardly expansible plastic vented lid
US3362575A (en) Plastic container for materials in bulk
US3173571A (en) Package
US3537956A (en) Petrie dish
US3485434A (en) Tray structure
US3371817A (en) Plastic container
US3180537A (en) Combined couplin and closure for dispensing canisters
US3568871A (en) Closure cap
US3113693A (en) Multi-position snap cap for containers
US3214069A (en) Plastic captive seal closure
US3326421A (en) Retractable plastic bottle spout
US3527372A (en) Container
US3474928A (en) Container having snap fastening means
US3638824A (en) Plastic container
US3519163A (en) Container and closure therefor
US3756444A (en) Tamperproof closure
US3738545A (en) Sliding plunger dispensing closure
US3342370A (en) Nestable cup construction
US4408698A (en) Novel cover and container assembly

Legal Events

Date Code Title Description
AS Assignment

Owner name: MARYLAND CUP CORPORATION

Free format text: CHANGE OF NAME;ASSIGNOR:SWEETHEART PROPERTIES, INC.;REEL/FRAME:004568/0663

Effective date: 19841231

Owner name: SWEETHEART PROPERTIES, INC., A CORP. OF MD.

Free format text: MERGER;ASSIGNOR:SWEETHEART PLASTICS, INC.;REEL/FRAME:004568/0656

Effective date: 19841231

AS Assignment

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 DE CORP.

Free format text: MERGER;ASSIGNOR:MARYLAND CUP CORPORATION;REEL/FRAME:005300/0311

Effective date: 19861217

AS Assignment

Owner name: SWEETHEART CUP COMPANY INC.

Free format text: CHANGE OF NAME;ASSIGNOR:FORT HOWARD CUP CORPORATION;REEL/FRAME:005346/0001

Effective date: 19891129

AS Assignment

Owner name: SWEETHEART CUP COMPANY INC., ILLINOIS

Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:BANKERS TRUST COMPANY, AS COLLATERAL AGENT;REEL/FRAME:006687/0491

Effective date: 19930830

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