US3443715A - Double wall container - Google Patents

Double wall container Download PDF

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Publication number
US3443715A
US3443715A US3443715DA US3443715A US 3443715 A US3443715 A US 3443715A US 3443715D A US3443715D A US 3443715DA US 3443715 A US3443715 A US 3443715A
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Prior art keywords
ribs
container
cup
sidewall
crests
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Expired - Lifetime
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Bryant Edwards
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Dart Container Corp
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Illinois Tool Works Inc
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Assigned to DART CONTAINER CORPORATION reassignment DART CONTAINER CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ILLINOIS TOOL WORKS, 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
    • 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
    • B65D1/265Drinking cups

Description

May 13, N69 8. EDWARDS 3,
DOUBLE WALL CONTAINER Filed Jan. 18, 1968 United States Patent 3,443,715 DOUBLE WALL CONTAINER Bryant Edwards, Oak Park, Ill., assignor to Illinois Tool Works Inc.. Chicago, Ill., a corporation of Delaware Filed Jan. 18, 1968, Ser. No. 698,879 Int. Cl. B65d 25/18, 21/00, 7/42 US. Cl. 220-9 10 Claims ABSTRACT OF THE DISCLOSURE The present invention relates to a novel container or cup, and more specifically to a novel double wall insulated cup.
An important object of the present invention is to provide a novel double wall insulating cup having inner and outer rib or flute means constructed for enhancing the msulating qualities of the cup and also constructed for rendering a plurality of the cups selfaligning when placed 1n a stack so as to promote uniform nesting in a compact manner.
A more specific object of the present invention is to provide a novel container or cup of the above described type formed from thin plastic or other suitable material and having generally vertically extending ribs or flutes arranged for defining insulating air spaces between inner and outer walls of the cup and also so that external ribs on one cup are adapted to cooperate with internal ribs on an adjacent cup in a stack so that the cups automatically align with each other for permitting compact nesting.
Other objects and advantages of the present invention will become apparent from the following description and the accompanying drawings wherein:
FIG. 1 is an elevational view showing the container or cup incorporating features of the present invention;
FIG. 2 is an enlarged fragmentary sectional view taken generally along line 22 in FIG. 1 and further showing in broken lines, the manner in which a second cup is adapted to nest within the first cup;
FIG. 3 is an enlarged fragmentary sectional view taken along line 33 in FIG. 1;
FIG. 4 is an enlarged fragmentary sectional View taken along line 44 in FIG. 1;
FIG. 5 is a fragmentary sectional view similar to FIG. 2, but shows a modified form of the present invention; and
FIG. 6 is a side elevational view of a container or cup structure embodying another modified form of the present invention.
Referring now more specifically to the drawings wherein like parts are designated by the same numerals throughout the various figures, a container or cup 10 incorporating features of the present invention is shown in FIGS. 1-4 and comprises an inner cup member 12 and an outer cup member 14. These cup members are preferably formed from a suitable material such as plastic in one piece and without seams. For example, a high impact polystyrene plastic material has been found to be especially suitable.
The cup member 12 has a side wall 16, preferably of inverted generally frusto-conical configuration. A lower margin of the side wall merges with a transverse bottom wall 18. The outer cup member has a similar side wall "ice 20 and a bottom member 22 which is preferably spaced from the inner bottom wall 18 so as to define an insulating air space 24 therebetween. Upper margins 26 and 28 of the inner and outer side walls are rolled together to form an upper end rim 30 which secures the inner and outer cup members together.
In this embodiment, the cup or container 10 has a portion or area 32 intermediate upper and lower marginal portions of the side walls and providing a primary gripping section which is to be engaged by the hand of a user. In order to insulate the outer surface of the cup from the interior and thereby protect the hand of the user, the outer wall is formed with inwardly projecting flutes 34 separated by ribs 36, which ribs extend substantially axially the length of the portion 32. In addition, the inner cup member wall is formed with flutes 3-8 separated by ribs 40. In this embodiment the inner and outer flutes and ribs are aligned with each other so as to define insulating air spaces 42 and 44 therebetween. With this construction, the container or cup is well insulated entirely around its periphery and the ribs 36 present broad smooth surfaces which may be comfortably grasped in the hand of a user. In most instances, the users hand will engage only the ribs 36 since the outer surfaces of the flutes 34 have a circumferential extent similar to the ribs and the flutes are, however, slightly wider than the ribs to permit nesting of stacked cups as described below and shown in broken lines in FIG. 2.
In this embodiment, the inner and outer walls are formed with annular wall sections 43 and 45 at the lower margin of the gripping portion and merging with inwardly projecting shoulders or annular shelf sections 46 and 48. These sections respectively merge with inner and outer lower end wall sections 50 and 52. In accordance with a feature of the present invention, the outer lower end wall section 52 is formed with flutes 54 and ribs 56 having a substantially V-shaped configuration as shown best in FIG. 4 and the inner lower end wall section is formed with somewhat similar flutes and ribs 58 and 60. The ribs and flutes nest within each other as shown in FIG. 4, but it is to be noted that the outer ribs 56 have a sharper V-shaped configuration than the inner ribs 60'. In other words, the included angle between the sides of the ribs 56 is less than the included angle between the sides of the ribs 60. Thus, the ribs 56 have crest portions which project substantially radially outwardly from crest portions of the ribs 60 so as to define insulating air spaces 62 therebetween. Engagement between ribs 56 and 60' also serves to orient the inner and outer members relative to each other so as to obtain the desired relationship between ribs 36 and 40. Furthermore, when a plurality of the cups are stacked, the crests of the outer ribs 56 of one cup are adapted to project into and nest within the V- shaped grooves at the inner sides of the ribs 60 of an immediately adjacent cup as shown in broken lines in FIG. 4. Thus, a plurality of cups may be stacked or nested together in a relatively compact manner.
As previously indicated, the V-shaped configuration of the outer ribs 56 is relatively sharp. This coupled with the relatively wide grooves provided by the flatter inner ribs 60 facilitates entry of the outer ribs into the inner ribs during stacking or, in other words, aids in rendering the cups self-aligning. In addition, the construction of the inner ribs 60 is such that the grooves provided thereby have relatively wide and flaring mouths 64 as shown in FIG. 3. These months are in alignment with the grooves provided by the ribs 40 in the gripping portion of the container. Therefore when one cup is inserted within another during a stacking operation, preliminary alignment between the cups may first be obtained by engagement of at least a portion of the ribs 56 within the grooves defined by the ribs 40 and final alignment will be obtained as these ribs pass downwardly through the mouths 64 and enter into the grooves defined by the ribs 60.
Referring now to FIG. 5, there is shown a slightly modified form of the present invention. The structure of this embodiment is substantially the same as that described above as indicated by the application of identical reference numerals with the suflix a added to the corresponding elements except that the outer and inner ribs 36a and 40a are circumferentially offset from each other. In other words, in the first embodiment, the ribs 36 and 40 are in alignment with each other with the generally radially extending wall portions of these ribs in substan tial alignment. However, in the embodiment shown in FIG. 5, the inner ribs 40a are in alignment with and abut the surfaces of the flutes 34a. This arrangement increases the width of the insulating air pockets 44a.
FIG. 6 shows a further modification of the present invention wherein elements corresponding to those described above are indicated by the same reference numerals with the suffix b added. In this embodiment the V-shaped outer and inner ribs 56b and 60b extend all the way from the bottom of the cup upwardly across the gripping portion to points adjacent the upper margin of the cup. It is understood that the ribs 56b and 60b have the same cross-sectional configuration and inter-fit with each other in the same manner as the corresponding ribs shown in FIG. 4.
The invention is claimed as follows:
1. A double wall container including an inner member and an outer member, said members respectively including inner and outer downwardly converging peripheral side walls and inner and outer bottom walls, said inner and outer side walls respectively including a plurality of circumferentially spaced axially extending and radially outwardly projecting ribs having outwardly facing crests and defining radially inwardly facing grooves, said outer sidewall rib crests being spaced from the inner side wall and defining insulating air chambers, said outwardly facing crests of the outer sidewall ribs being narrower than the inwardly facing grooves of said inner sidewall ribs for enabling a plurality of said containers to be stacked together with said outer sidewall ribs of one container nesting within the inner sidewall ribs of a like container.
2. A container, as defined in claim 1, wherein said outer sidewall ribs have a generally V-shaped transverse crosssectional configuration.
3. A container, as defined in claim 2, wherein said inner sidewall ribs have a V-shaped transverse cross-sectional configuration with an included angle greater than the included angle of the V-shaped cross-sectional configuration of the outer sidewall ribs, the crests of the inner sidewall ribs projecting into said outer sidewall ribs.
4. A container, as defined in claim 3, wherein said inner member comprises an annular wall section "around upper ends of its ribs and the grooves defined thereby, said inner sidewall ribs including diverging upper end portions merging with said wall section and providing said last mentioned grooves with flaring mouths at upper ends thereof for facilitating alignment of a plurality of like containers during stacking of such containers.
5. A container, as defined in claim 3, wherein said ribs traverse lower end portions of said inner and outer side walls.
6. A container, as defined in claim 5, wherein said ribs extend from said lower end portions upwardly substantially to upper margins of said inner and outer side walls.
7. A container, as defined in claim 1, wherein said crests of said ribs have a width circumferentially of the container substantially greater than the radial extent of said ribs, said ribs being spaced from each other circumferentially of the container by axially extending wall sections having a circumferential extent similar to the circumferential extent of the crests.
8. A container, as defined in claim 7, wherein the circumferential extent of the inner sidewall rib crests is greater than the circumferential extent of the outer sidewall rib crests, said inner sidewall ribs being disposed in substantial radial alignment with said outer sidewall ribs.
9. A container, as defined in claim 7, wherein said inner rib crests are wider than said outer sidewall rib crests, said inner sidewall rib crests being disposed in radial alignment with and abutting said axially extending sections circumferentially spacing said outer sidewall ribs.
10. A container, as defined in claim 7, wherein said inner and outer sidewall ribs traverse intermediate grip ping portions of said side walls and terminate at upper margins of inner and outer lower end portions of said side walls, said inner and outer lower end portions respectively including a plurality of additional circumferentially spaced axially extending and radially outwardly projecting ribs having radially outwardly facing crests and defining inwardly facing grooves, said additional ribs having substantially V-shaped cross-sectional configurations for maintaining alignment of said inner and outer members during assembly thereof and for promoting selfalignment of a plurality of such containers when the containers are stacked together.
References Cited UNITED STATES PATENTS 411,096 9/1889 Eaton et al 22010 3,079,027 2/1963 Edwards. 3,082,900 3/1963 Goodman 220l5 3,194,468 7/1965 Baron.
JOSEPH R. LECLAIR, Primary Examiner.
JAMES R. GARRETT, Assistant Examiner.
U.S. Cl. X.R. 220-97, 72, 83 i
US3443715D 1968-01-18 1968-01-18 Double wall container Expired - Lifetime US3443715A (en)

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JP (1) JPS5410915B1 (en)
DE (2) DE1901855A1 (en)
FR (1) FR1598022A (en)
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NL (1) NL6900687A (en)

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US3521808A (en) * 1968-07-26 1970-07-28 Pantasote Co Of New York Inc T Tray for frangible materials
DE2312116A1 (en) * 1972-03-16 1973-09-27 Itw Ltd Cup for holding beverages
DE2404668A1 (en) * 1973-02-07 1974-08-15 Itw Ltd Seamless thin-walled hairel
US3934725A (en) * 1972-03-13 1976-01-27 Illinois Tool Works Inc. Nestable article
US4018904A (en) * 1975-01-21 1977-04-19 Acecook Co., Ltd. Container for an instant food
US4349124A (en) * 1980-09-22 1982-09-14 Champion International Corporation Composite paperboard tray
US4826265A (en) * 1987-07-16 1989-05-02 Wenger Corporation Shelving system for musical instrument storage
US4880132A (en) * 1988-07-15 1989-11-14 Mcgean-Rohco, Inc. Process for plating adherent co-deposit of aluminum, zinc, and tin onto metallic substrates, and apparatus
US4993580A (en) * 1990-04-16 1991-02-19 Smith Glen R Insulated beverage container
US5226585A (en) * 1991-11-19 1993-07-13 Sherwood Tool, Inc. Disposable biodegradable insulated container and method for making
US5279442A (en) * 1991-12-18 1994-01-18 Ball Corporation Drawn and ironed container and apparatus and method for forming same
US5363982A (en) * 1994-03-07 1994-11-15 Sadlier Claus E Multi-layered insulated cup formed of one continuous sheet
US5395009A (en) * 1992-10-27 1995-03-07 Gebr. Otto Kg Plastic container for fruits and vegetables
US5415339A (en) * 1993-04-21 1995-05-16 Howard; Jeremy C. Drinking cup with open ribbed sidewall
US5524817A (en) * 1995-04-04 1996-06-11 Paper Machinery Corporation Dual walled container
US5628453A (en) * 1996-01-16 1997-05-13 Packaging Resources, Inc. Cup with thermally insulated side wall
USD381558S (en) * 1995-12-29 1997-07-29 Sweetheart Cup Company, Inc. Drinking cup
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US5820016A (en) * 1996-05-13 1998-10-13 Dunkin' Donuts Incorporated Cup and lid
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Cited By (116)

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Publication number Priority date Publication date Assignee Title
US3521808A (en) * 1968-07-26 1970-07-28 Pantasote Co Of New York Inc T Tray for frangible materials
US3934725A (en) * 1972-03-13 1976-01-27 Illinois Tool Works Inc. Nestable article
DE2312116A1 (en) * 1972-03-16 1973-09-27 Itw Ltd Cup for holding beverages
DE2404668A1 (en) * 1973-02-07 1974-08-15 Itw Ltd Seamless thin-walled hairel
US4018904A (en) * 1975-01-21 1977-04-19 Acecook Co., Ltd. Container for an instant food
US4349124A (en) * 1980-09-22 1982-09-14 Champion International Corporation Composite paperboard tray
US4826265A (en) * 1987-07-16 1989-05-02 Wenger Corporation Shelving system for musical instrument storage
US4880132A (en) * 1988-07-15 1989-11-14 Mcgean-Rohco, Inc. Process for plating adherent co-deposit of aluminum, zinc, and tin onto metallic substrates, and apparatus
US4993580A (en) * 1990-04-16 1991-02-19 Smith Glen R Insulated beverage container
US5226585A (en) * 1991-11-19 1993-07-13 Sherwood Tool, Inc. Disposable biodegradable insulated container and method for making
US5279442A (en) * 1991-12-18 1994-01-18 Ball Corporation Drawn and ironed container and apparatus and method for forming same
US5395009A (en) * 1992-10-27 1995-03-07 Gebr. Otto Kg Plastic container for fruits and vegetables
US5415339A (en) * 1993-04-21 1995-05-16 Howard; Jeremy C. Drinking cup with open ribbed sidewall
US5363982A (en) * 1994-03-07 1994-11-15 Sadlier Claus E Multi-layered insulated cup formed of one continuous sheet
USRE35830E (en) * 1994-03-07 1998-06-30 Insul-Air Holdings, Inc. Multi-layered insulated cup formed of one continuous sheet
US5524817A (en) * 1995-04-04 1996-06-11 Paper Machinery Corporation Dual walled container
US5660326A (en) * 1995-08-18 1997-08-26 Sherwood Tool Incorporated Multi-layered insulated cup formed from folded sheet
US5964400A (en) * 1995-08-18 1999-10-12 Sherwood Tool Inc Multi-layered insulated cup formed from folded sheet
USD381558S (en) * 1995-12-29 1997-07-29 Sweetheart Cup Company, Inc. Drinking cup
USD383942S (en) * 1996-01-05 1997-09-23 Boise Cascade Corporation Cup
US5628453A (en) * 1996-01-16 1997-05-13 Packaging Resources, Inc. Cup with thermally insulated side wall
US5820016A (en) * 1996-05-13 1998-10-13 Dunkin' Donuts Incorporated Cup and lid
USD386047S (en) * 1996-08-12 1997-11-11 Cambro Manufacturing Company Drinking vessel
US5713512A (en) * 1996-09-03 1998-02-03 Polytainers, Inc. Polymeric insulated container
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DE1901855A1 (en) 1969-08-28
JPS5410915B1 (en) 1979-05-10
DE6901422U (en) 1972-03-23
FR1598022A (en) 1970-06-29
NL6900687A (en) 1969-07-22
GB1251595A (en) 1971-10-27

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