Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3456860 A
Publication typeGrant
Publication date22 Jul 1969
Filing date9 Jan 1968
Priority date9 Jan 1968
Also published asDE1900504A1
Publication numberUS 3456860 A, US 3456860A, US-A-3456860, US3456860 A, US3456860A
InventorsWilliam L Janninck
Original AssigneeIllinois Tool Works
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Double wall cup
US 3456860 A
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

y 1969 w. L. JANNINCK 3,456,860

DOUBLE WALL CUP Filed Jan. 9, 1968 44 wwwzzammz 0AM, M, {Z/VZZEW United States Patent US. Cl. 229-15 7 Claims ABSTRACT OF THE DISCLOSURE There is disclosed a cup having inner and outer walls drawn from sheets of plastic material and respectively formed with oppositely circumferentially and axially extending ridges which abut each other at spaced points for providing mutual support while minimizing heat transfer between the inner and outer walls.

The present invention relates to a novel cup structure, and more specifically to a novel double wall cup.

It has heretofore been suggested to form drinking cups suitable for both hot and cold beverages with inner and outer spaced apart walls so that the outer surfaces are insulated from the contents sufficiently to enable the cup to be comfortably held in the hand. In order to enable such cups to be produced sufficiently economically to enable their use in dispensing machines and as throw away items, it is desired to minimize material costs by making the walls substantially as thin as practical. This, however, creates problems in heat transfer and in structural integrity. While proposals have been made for solving these problems and certain of these have met with substantial success, the present invention contemplates further improvements.

It is an important object of the present invention to provide a novel cup having inner and outer walls formed from thin material and each formed for increasing the strength and rigidity thereof and for engaging the other in mutually supporting relationship and in a manner for minimizing heat transfer between the inside of the cup and outer surface portions thereof which are to be touched by the hand of a person holding the cup.

A more specific object of the present invention is to provide a novel cup of the above described type which is constructed so that the inner and outer walls may be quickly and economically assembled with each other without necessitating any predetermined circumferential alignment.

A still further specific object of the present invention is to provide a novel cup structure of the above described type wherein the inner and outer walls are respectively formed with narrow ribs projecting for engagement with each other for maintaining the remaining portions of the walls in spaced relationship with the ribs on the inner wall extending at angles with respect to the ribs on the outer wall so that the inner and outer ribs contact each other at spaced small points or areas for minimizing the heat transfer between the inner and outer walls.

Other objects and advantages of the present invention will become apparent from the following description and the accompanying drawing wherein:

FIG. 1 is a side elevational view of a cup structure incorporating features of the present invention;

FIG. 2 is a side elevational view of an inner wall member prior to assembly within a cup structure of the type shown in FIG. 1;

FIG. 3 is an enlarged fragmentary sectional view taken along line 3--3 in FIG. 1; and

FIG. 4 is an enlarged fragmentary sectional view taken along line 4-4 in FIG. 1.

3,456,860; Patented July 22, 1969 Referring now more specifically to the drawings wherein like parts are designated by the same numerals throughout the various figures, a cup 10 incorporating features of the present invention comprises an inner member 12 and an outer member 14. These members are formed from a thin plastic material such, for example, as high impact polystyrene.

The cup 10 has a side wall structure preferably with an inverted substantially frusto-conical configuration. This side wall structure has an intermediate gripping and insulating portion 16 described more in detail below. As shown best in FIG. 3, upper margins 18 and 20 of the inner and outer cup members are rolled together to provide the cup with a rim 22. The rolled and interlocking margins further serve to secure the inner and outer cup members with respect to each other.

The inner and outer members 12 and -14 respectively have integral bottom sections 24 and 26. These sections are axially separated from each other as shown in FIG. 3 so as to define an air space 28 therebetween. The outer bottom section 26 is thus insulated from the contents of the cup so as to protect the hand of a person holding the cup or a table surface on which it may be placed.

As will be understood, it is frequently desirable to stack a plurality of the cups 10 in nesting relationship for storage and dispensing purposes. Thus the inner and outer cup members are provided with surfaces or shoulders which are substantially axially engageable with an adjacent cup in a stack for preventing the tapering side surfaces from wedging together and binding. Such binding makes dispensing difficult and also unreliable. In the embodiment shown, the aforementioned surfaces or shoulders comprise a downwardly facing corner portion 30 of the outer bottom section 26 and a substantially radially extending annular shoulder 32 formed in a lower end portion of the inner cup member as shown in FIG. 3.

In accordance with an important feature of the present invention, the insulated grip portion 16 of the cup is constructed so that the outer side wall of the cup is spaced from the inner side wall and insulated therefrom by air pockets while at the same time the inner and outer walls are mutually self-supporting at spaced points or limited areas. More specifically, the inner cup member has a side wall 34 formed with a plurality of spaced apart axially and circumferentially extending narrow ribs 36 which traverse the grip portion 16 of the cup. In the embodiment shown, these ribs extend generally helically around the side wall of the cup. Preferably the helical pitch of the ribs is quite long so that each rib extends around only a minor portion of the cup circumference.

As previously indicated, the ribs 36 are narrow and are spaced substantially from each other. As shown in the drawings, the ribs are spaced apart by wall sections 38 having transverse dimensions substantially greater than the transverse dimensions of the ribs.

The outer cup member 14 has a side wall 40 corresponding to the side wall 34 of the inner cup member. The outer side wall 40 is also formed with a plurality of spaced apart narrow ribs 42 separated by relatively wide wall sections 44. In the embodiment shown, the ribs 42 also extend with a long helical pitch axially and circumferentially of the cup. However, the ribs 42 are formed with a helix of one hand while the ribs 36 are formed with a helix of the opposite hand. As the result, the ribs 36 which project outwardly from the wall sections 38 and the ribs 42 which project inwardly from the wall sections 44 abut each other with substantially point contact at limited and spaced apart areas 46. Thus the outer surfaces of the wall sections 44 which form the gripping surfaces of the cup are effectively insulated by air pockets 48 between the inner and outer walls. The points or spaced apart limited areas 46 of contact between the ribs enable the inner and outer walls to support or reinforce each other while at the same time minimizing the conduction of heat directly between the inner and outer walls.

Contact at the areas 46 is limited by forming the ribs so as to present narrow edges for crests for engagement with each other and this may be accomplished by providing each rib with a generally V-shaped cross-sectional configuration. The ribs formed in this manner not only minimize the transfer of heat mentioned, but also aid in strengthening and rigidifying their respective side walls 34 and 40.

While a preferred embodiment of the present invention has been shown and described herein, it is understood that many structural details may be'changed without departing from the spirit and scope of the appended claims. For example, while ribs of the opposite hand have been disclosed on the inner and outer cup members, it is contemplated that the configuration of either one or bothof the inner and outer ribs may be modified into a variety of shapes as long as the inner ribs cross the outer ribs at angles so that discrete areas or points of interengagement are obtained and are spaced both axially and circumferentially of the cup and the cup is formed with insulated air pockets between the inner and outer walls and separating the points of engagement.

The invention is claimed as follows:

1. A double wall container comprising an inner member and an outer member, said members respectively including inner side and bottom walls and outer side and bottom walls, said inner and outer side walls respectively including groups of outwardly and inwardly projecting elongated ribs separated by wall sections, said outwardly and inwardly projecting ribs abutting each other at a plurality of separate discrete areas spaced axially and circumferentially of said container, and said wall sections being spaced from each other and defining insulating air spaces between said discrete areas, areas of said outwardly and inwardly projecting ribs between said sep- Cit p n ,4 "1". arate discrete areas also being spaced from each other and from opposing wall sections.

2. A container, as definedin claim 1, wherein the ribs of one of said groups of ribs extend both axially and circumferentially of said container. i

3. A container, as defined in claim 1, wherein the ribs of both of said groups of'ribs extend partially axially of ribs have a predetermined transverse cross-sectional dimension, and said wall sections have a corresponding transverse cross-sectional dimension substantially greater than said predetermined dimension.

6. A container, as defined in claim 5, wherein said ribs, have a substantially V-shaped transverse cross-sectional configuration. p r

7. A drinking cup, as defined in claim 3, adapted to be nested in a stack of similar drinking cups and comprising :axially facing surface means on one of said members engageable with a complementary axially facing surface means on the other of said members in an adjacent cup in the stack for preventing binding of the cup members in the stack.

' References Cited UNITED STATES PATENTS 7/1964 Goodman 220-15 2/1963 Edwards 220-97 DAVID M. BOCKENEK, Primary Examiner U.S. Cl. X.R.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3079027 *10 Dec 195926 Feb 1963Illinois Tool WorksDouble walled nestable plastic container
USRE25618 *14 Jul 1964 Figure
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3580468 *5 Aug 196925 May 1971Continental Can CoNestable double-walled disposable container
US3850361 *13 Sep 197226 Nov 1974Itw LtdContainers
US4261501 *31 Oct 197914 Apr 1981Hallmark Cards IncorporatedLaminated insulated hot drink cup
US4548349 *3 Apr 198422 Oct 1985Whitey's Ice Cream Manufacturers, Inc.Protective sleeve for a paper cup
US4872569 *12 May 198710 Oct 1989Brown BolteDrinking vessels
US5092485 *8 Mar 19913 Mar 1992King Car Food Industrial Co., Ltd.Thermos paper cup
US5145107 *10 Dec 19918 Sep 1992International Paper CompanyInsulated paper cup
US5190572 *5 Mar 19912 Mar 1993Smith & HawkenStacking units
US5226585 *19 Nov 199113 Jul 1993Sherwood Tool, Inc.Disposable biodegradable insulated container and method for making
US5326019 *3 May 19935 Jul 1994Wolff Steven KDouble walled paper cup
US5363982 *7 Mar 199415 Nov 1994Sadlier Claus EMulti-layered insulated cup formed of one continuous sheet
US5385260 *19 Jan 199431 Jan 1995Sherwood Industries, Inc.Disposable cup assembly system and method
US5460323 *10 Jan 199524 Oct 1995California Environmental Cup, Inc.Disposable insulated container
US5524817 *4 Apr 199511 Jun 1996Paper Machinery CorporationDual walled container
US5628453 *16 Jan 199613 May 1997Packaging Resources, Inc.Cup with thermally insulated side wall
US5660326 *30 Apr 199626 Aug 1997Sherwood Tool IncorporatedMulti-layered insulated cup formed from folded sheet
US5713512 *3 Sep 19963 Feb 1998Polytainers, Inc.For holding food
US5752653 *13 May 199619 May 1998Razzaghi; MahmoudPaper cup with air insulation
US5772111 *1 May 199630 Jun 1998Kirsch; John M.Container structure
US5775577 *15 Oct 19967 Jul 1998Baldocci, Modena, Scherrer, Stanghellini Family Trust, And TitusDisposable insulated container with microflute structure
US5820016 *13 May 199613 Oct 1998Dunkin' Donuts IncorporatedCup and lid
US5839653 *23 May 199724 Nov 1998Zadravetz; Robert B.Container with corrugated wall
US5960975 *19 Mar 19975 Oct 1999Tetra Laval Holdings & Finance S.A.Packaging material web for a self-supporting packaging container wall, and packaging containers made from the web
US5964400 *13 Jun 199712 Oct 1999Sherwood Tool IncMulti-layered insulated cup formed from folded sheet
US6039682 *20 Nov 199721 Mar 2000Fort James CorporationContainers formed of a composite paperboard web and methods of forming
US6126584 *14 Oct 19983 Oct 2000Zadravetz; Robert B.Method for forming a container with corrugated wall
US61863946 Mar 200013 Feb 2001Fort James CorporationContainers formed of a composite paperboard web and methods of forming the same
US625399516 May 20003 Jul 2001Burrows Paper CorporationInsulated containers and sidewalls having laterally extending flutes, and methods
US62872476 Mar 200011 Sep 2001Fort James CorporationContainers formed of a composite paperboard web and methods of forming the same
US6598786 *5 Mar 200229 Jul 2003Tzer-Huang GuoMelioration of insulating paper container
US6663926 *27 Aug 199816 Dec 2003Dai Nippon Printing Co., Ltd.Heat-insulating container and apparatus for producing the same
US71170662 Nov 20043 Oct 2006Solo Cup Operating CorporationComputer controlled cup forming machine
US71219912 Nov 200417 Oct 2006Solo Cup Operating CorporationBottom sealing assembly for cup forming machine
US745850412 Oct 20062 Dec 2008Huhtamaki Consumer Packaging, Inc.Multi walled container and method
US7677435 *10 Apr 200616 Mar 2010Ptm Packaging Tools Machinery Pte. Ltd.Double-walled paperboard cup
US76992164 Nov 200420 Apr 2010Solo Cup Operating CorporationTwo-piece insulated cup
US77173251 Oct 200718 May 2010International Paper CompanyDouble wall container with internal spacer
US79220715 Aug 200812 Apr 2011Huhtamaki, Inc.Multi walled container and method
US799325426 Oct 20079 Aug 2011Huhtamaki, Inc.Multi walled container and method
US8025210 *22 Jul 200927 Sep 2011Johnson Matthew JInsulated beverage container
US8132687 *26 Jun 200913 Mar 2012Alcoa Inc.Double-walled container and method of manufacture
US814679621 Apr 20063 Apr 2012Seda S.P.A.Cardboard container for drinks and process therefor
US81467979 Nov 20063 Apr 2012Seda S.P.A.Insulated cup
US825222413 May 200928 Aug 2012Camelbak Products, LlcMethods of assembling multi-layered drink-containers
US827677624 Nov 20102 Oct 2012Cool Gear International, LlcLids and containers
US836026314 Apr 200629 Jan 2013Seda S.P.A.Insulated container, method of fabricating same and apparatus for fabricating
US839388613 Oct 200612 Mar 2013Seda S.P.A.Device for producing a stacking projection and container with same
US845953114 Sep 200611 Jun 2013Seda S.P.A.Container and blank for the production thereof
US849079230 Nov 200723 Jul 2013Seda S.P.A.Package
US870191415 Feb 201322 Apr 2014Ronald Mark BuckTwo-part recyclable cup
US87942945 Mar 20095 Aug 2014Seda S.P.A.Insulated container, method of fabricating same and apparatus for fabricating
US88073398 Feb 201319 Aug 2014Seda SpaPackage
US20050006449 *30 Jul 200313 Jan 2005D'amato GianfrancoContainer
US20100108693 *4 Nov 20096 May 2010The Coca-Cola CompanyInsulated double-walled disposable plastic cup
US20100200647 *9 Feb 201012 Aug 2010International Paper CompanyEmbossed paperboard cup holder
US20120104004 *6 Jul 20103 May 2012Neil MarshallProcess for the Production of a Cup and a Plurality of Cups
US20120111877 *6 Jul 201010 May 2012Neil MarshallCardboard container
US20120241511 *2 Dec 201027 Sep 2012Neil MarshallContainer and its production process
USRE35830 *16 Aug 199630 Jun 1998Insul-Air Holdings, Inc.Multi-layered insulated cup formed of one continuous sheet
CN102076575B26 Jun 200930 Jul 2014美铝公司双壁容器及制造方法
DE102012102871A1 *2 Apr 20122 Oct 2013Paccor Deutschland GmbhVerpackungsbehälter
WO2005075319A1 *22 Dec 200418 Aug 2005Fuji Seal Int IncHeat insulating container
Classifications
U.S. Classification229/400, D07/523, 215/12.1, 206/520, 220/918, 220/592.22
International ClassificationB65D3/22, B65D81/38, B65D8/06, A47J41/00
Cooperative ClassificationB65D81/3869, A47J41/0077, Y10S220/918
European ClassificationA47J41/00G5B, B65D81/38H2
Legal Events
DateCodeEventDescription
13 Jun 1986ASAssignment
Owner name: DART CONTAINER CORPORATION, 432 HOGSBACK ROAD, MAS
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ILLINOIS TOOL WORKS, INC.;REEL/FRAME:004568/0710
Effective date: 19840127