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Publication numberUS3684123 A
Publication typeGrant
Publication dateAug 15, 1972
Filing dateAug 10, 1970
Priority dateAug 10, 1970
Publication numberUS 3684123 A, US 3684123A, US-A-3684123, US3684123 A, US3684123A
InventorsJohn A Bridges
Original AssigneeAladdin Ind Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Stacked insulated cups
US 3684123 A
Abstract
This application discloses cups formed from plastic heat insulating material wherein the bottom of each cup is relatively thin while its side wall is relatively thick. Cups formed in accordance with the invention may be stacked and by virtue of their construction there will be less heat transfer through the side wall than through the bottom whereby the liquid contained in each cup in the stack will be maintained at a desired temperature for relatively long periods of time.
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Description  (OCR text may contain errors)

[451 Aug. 15, 1972 United States Patent Bridges 154] STACKED INSULATED CUPS 3,491,914 1/1970 Elzey..........................220/9 F FOREIGN PATENTS OR APPLICATIONS [72] Inventor: John A. Bridges, Nashville, Tenn.

[73] Assignee: Aladdin Industries,

m 700,408 12/1964 Canada......................220/9 F icago, 1,593,589 6/1970 France F [22] Filed: Aug. 10, 1970 271,357 5/1927 Great Britain..........220/23.86

[211 App! 62426 Primary Examiner-George E. Lowrance Assistant ExaminerJames R. Garrett [52] US. Cl. R, 206/4, 220/97 R y Q g Hersh & [51] Int. Cl. 25/18 [58] Field of Search.......220/9 F, 97 R, 23.83, 23.86; [57] ABSTRACT This application discloses cups formed from plastic heat insulating material wherein the bottom of each cup is relatively 'thin while its side wall is relatively [56] References Cited UNITEDSTATESPATENTS thick. Cups formed in accordance with the invention may be stacked and by virtue of their construction there will be less heat transfer through the side wall than through the bottom whereby the liquid contained in each cup in the stack will be maintained at a desired temperature for relatively long periods of time.

2 Claims, 2 Drawing Figures XM XXX 69 5 mo mm a mm 0 1 22M 0 u u. 92 2 u u 2 2 m m 2m Imam numu t mmn Ym 0 e" n nwmm .mmn lm h e o fiwo WCMRSPW 58 2369 2455566 9999999 1111111 6252900 1 11 57 6805 945927 262327 4352577 SWAN-$616,214, 222233 NW J/t I ll llll ll 1 lliil STACKED INSULATED curs BACKGROUND OF THE INVENTION This invention relates generally to insulated liquid holding containers. More specifically, it relates to insulated containers for holding foods intended to be served at optimum temperatures. Insulated cups and the like are known which may be stacked for serving and storage purposes. However, those cups with which I am familiar have either uniform insulation in their bottoms and sides or even have side insulation which is thinner than the bottom insulation. Thus, while such cups or containers may be stacked, they do not retain the liquid contained therein any longer than one would expect from the nature and thickness of the insulation provided.

There may be situations where it is desired to put hot or cold liquids in cups for the purpose of serving individual portions at a later time. Very frequently, these times are as long as two or three hours in the case of hospitals or similar institutions so that cups capable of holding individual portions at desired serving temperatures for this time are desirable.

Therefore, it is an object of this invention to provide a novel stack of insulated cups capable of holding liquids placed therein at a desired temperature for a relatively long period of time.

It is another object of this invention to provide a novel insulated cup which may be placed in a stack of similar cups and which is constructed so as to optimize heat sharing against the liquids contained in each cup.

SUMMARY OF THE INVENTION In one embodiment of this invention the foregoing and other objects are achieved by providing a stack of cups wherein each cup has a bottom and a side wall formed from insulating material and the side walls are relatively thick with respect to the bottom walls so as to permit less heat transfer through the side walls.

BRIEF DESCRIPTION OF THE DRAWING The invention itself is set forth in the claims appended hereto and forming a part of this specification while the structure and mode of functioning of an embodiment thereof may be understood by reference to the detailed description taken in conjunction with the drawing in which:

' FIG. 1 is a side view of a stack of cups in accordance with the invention; and

FIG. 2 is a sectional side view of a stack of cups in accordance with the invention.

DETAILED DESCRIPTION FIG. 1 illustrates a stack of cups 2 wherein each cup is provided with a bottom 4 and a side wall 6. Obviously, a particular shape of the cups is in large part a matter of design and can be varied to reflect aesthetic and practical considerations. In the embodiment illustrated, each cup is provided with a handle 8 but such a handle may or may not be provided as desired.

As is best seen in FIG. 2, each cup has a circumferential shoulder 10 on its bottom while the inner surface 12 of the upper portion of the side wall of each cup is shaped so as to conform to the circumferential shoulder. As may be seen in this figure, when the cups are stacked the circumferential shoulder will engage with the portion 12 to provide structural stability for a stack of cups.

Also, as may be seen in FIG. 2, when the cups are stacked a relativelythin plastic lid 14 may be provided on the top of each cup passing between the shoulder 10 and portion 12 but functioning as a lid associated with each cup when the cups are removed from the stack. The cover may be formed of styrene which is relatively inexpensive material so that it may be disposed of after use while the cups themselves are washable and reusable.

Also, as may be seen in FIG. 2, a stack cover 16 may be provided. The cover 16 may be formed of an insulating material such as styrofoam providing insulation in the vertical direction.

Each cup may be formed by molding in a suitable mold a unitary skin 18 out of a plastic material which is heat resistant and relatively impervious. A suitable material for this purpose is styrene acrylonitrile. The bottom and side walls of each cup are completed by foaming in place heat insulating material. A suitable material is polyurethane foam.

As shown in FIG. 2, each cup is formed so that its side wall 6 is relatively thick with respect to its bottom 4. In this manner, the heat transfer through the side wall is less than the heat transfer through the bottom. Thus, when the cups are stacked and are holding a hot liquid, there will be more heat transfer in the vertical direction between the liquids in the various cups than in the horizontal direction to the environment external of the stack. Consequently, a stack of cups in accordance with the invention will tend to hold a liquid at a desired temperature for a longer period of time than insulated cups having uniform side wall and bottom insulation.

Obviously, various modifications in the materials used and details of configuration may be made and it is intended by the claims to cover all such modifications which fall within their scope.

What is claimed as new and desired to be secured by Letters Patent of the United States is:

1. In a cup the improvement comprising a bottom and a side wall, said bottom and side walls being formed by a heat resistant relatively impervious plastic skin constituting the outer and inner surfaces thereof, the outer and inner surfaces of said side wall being spaced a first relatively great distance apart over the entire height thereof, the outer and inner surfaces of said bottom being spaced a second relatively small distance apart, a foamed heat insulating material filling the space between said outer and inner surfaces, a circumferential shoulder provided between said bottom and said side wall, and wherein the upper portion of said side wall is shaped and dimensioned to engage said circumferential shoulder, and wherein said bottom extends a slight distance below said circumferential shoulder, whereby a plurality of such cups may be stacked with the bottom of one cup extending slightly intoa cup below it in a stack.

2. A stack of insulated liquid holding cups, each having a bottom and a side wall, each bottom and side wall being formed by a heat resistant relatively impervious plastic skin constituting the outer and inner surfaces thereof and a quantity of foamed insulated material 3,684,123 7 3 4 between said inner and outer surfaces wherein the side tion of said side wall is shaped and dimensioned to con- Wall is f y thick Over its entire height While the form to the profile of said circumferential shoulder bottom is relatively thin so as to permit less heat transfer throu said side wall than throu said bottom, each cur? being provided with a circ li mferential 5 wlth the shoulder of the upper cup engaging the shaped shoulder between said bottom and said side wall and porno ofthe cup benea wherein a portion of the inner surface of the upper porwhereby one cup may be stacked on top of another cup

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1542115 *Oct 25, 1924Jun 16, 1925Adolph O WeisFood-storing dishes
US2436097 *Mar 23, 1943Feb 17, 1948Clarke Houghton WDish
US2552641 *Jan 12, 1946May 15, 1951Willard L MorrisonHeat insulated container having foamed plastic insulation
US2623656 *Feb 23, 1950Dec 30, 1952Rottau Rudolph BPicnic server
US2652698 *Nov 23, 1951Sep 22, 1953Schlumbohm PeterPortable icebox
US3277220 *Feb 4, 1963Oct 4, 1966Owens Illinois Glass CoMethod for making composite foamed plastic containers
US3471075 *Oct 20, 1967Oct 7, 1969Monsanto CoContainer wall structure
US3491914 *Jun 7, 1968Jan 27, 1970Kalamazoo Plastics CoExpanded plastic container having rigid internally press-fit cover
CA700408A *Dec 22, 1964Crown Machine And Tool CompanyContainer
FR1593589A * Title not available
GB271357A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3791547 *Feb 25, 1972Feb 12, 1974Gott Mfg Co IncIce chest construction
US3841479 *May 15, 1972Oct 15, 1974Continental Can CoContainer and container blank
US3949876 *Sep 26, 1974Apr 13, 1976Aladdin Industries, IncorporatedArticles for beverage service
US4244477 *Aug 20, 1979Jan 13, 1981Seel Jerry EContainer for potable liquid
US4615460 *Aug 28, 1985Oct 7, 1986General Dynamics Corporation/Convair Div.Anti-contamination covers for structure openings
US4805770 *Oct 16, 1987Feb 21, 1989Polygram International Holding B.V.Cassette with tray ejection means
US5076463 *Jun 8, 1990Dec 31, 1991Mcgraw Kenneth EThermally stabilized hot beverage serving vessel
US5168140 *Feb 11, 1991Dec 1, 1992Helmut WelkerMicrowave coffee brewer and travel mug
US5294014 *Oct 16, 1992Mar 15, 1994Aladdin Synergetics, Inc.Container closure arrangement
US5423426 *May 5, 1994Jun 13, 1995Harper; Ella F.Portable food cooler apparatus
US5515995 *Dec 15, 1994May 14, 1996Aladdin Synergetics, Inc.Double wall beverage container having a wide base
US5531353 *Oct 26, 1994Jul 2, 1996Ward; Ronald K.Drinking cup device
US5916470 *Jan 10, 1997Jun 29, 1999Aladdin Industries, LlcComprising a volume for receiving a product, in heat exchange communication with a microwave absorbing material, wherein the microwave absorbing material preferably comprises monoglycerides, diglycerides, or mixtures thereof; food or
US6147337 *Dec 10, 1998Nov 14, 2000Aladdin Industries, LlcMicrowaveable heat retentive receptacle
US6386431 *Jan 19, 2001May 14, 2002Shin-Shuoh LinVacuum insulated coffee server manufacturing process
US6427863 *Dec 29, 2001Aug 6, 2002Karen NicholsBaby bottle warmer
US8118189 *Dec 14, 2007Feb 21, 2012Cups Unlimited, LlcTemperature-indicating sleeve and related container
US8807340 *May 19, 2011Aug 19, 2014Stacked Wines, LlcBeverage glass and beverage glass assembly
US20110011823 *Oct 19, 2009Jan 20, 2011Seattle Sports Co., Inc.Two-part bottle
US20130221009 *May 19, 2011Aug 29, 2013Stacked Wines, LlcBeverage glass and beverage glass assembly
DE29602003U1 *Feb 6, 1996Mar 28, 1996Cryo Genesis Europ LtdKastenförmiger Kühlbehälter
EP0081279A1 *Aug 9, 1982Jun 15, 1983Aladdin Industries, IncorporatedPlastic food container of double wall construction
EP0631940A1 *Jun 29, 1994Jan 4, 1995Gabriel GawlikReusable transport and containerizing system comprising a stackable crate for stacking containers
WO2010111237A1 *Mar 23, 2010Sep 30, 2010Peerless Machine & Tool CorporationCup lid manufacturing process
Classifications
U.S. Classification220/592.17, 220/902, 206/545, 206/503, D07/511
International ClassificationA47G19/22, B65D21/02, B65D81/38
Cooperative ClassificationA47G19/2288, B65D21/0219, B65D81/3867, Y10S220/902
European ClassificationB65D21/02E7A, A47G19/22Q, B65D81/38H1
Legal Events
DateCodeEventDescription
Feb 25, 1986ASAssignment
Owner name: ALADDIN INDUSTRIES INCORPORATED
Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:HARRIS TRUST AND SAVINGS BANK;REEL/FRAME:004518/0596
Effective date: 19851016
Feb 1, 1985ASAssignment
Owner name: HARRIS TRUST AND SAVING BANK, 111 WEST MONROE STRE
Free format text: SECURITY INTEREST;ASSIGNOR:ALADDIN INDUSTRIES, INCORPORATED, CORP. OF DE.;REEL/FRAME:004363/0148
Effective date: 19850125