THERMODYNAMIC CONTAINER

• US 3,603,106 A
• Filed: 03/27/1969
• Issued: 09/07/1971
• Est. Priority Date: 03/27/1969
• Status: Expired due to Term

• Current Assignee: John W. Ryan, Wallace H. Shapero
• Original Assignee: John W. Ryan, Wallace H. Shapero
• Inventors: Shapero, Wallace H., Ryan, John W.
• Primary Examiner(s): Wye, William J.
• Application Number:
  US04/810,957
• Time in Patent Office: 894 Days
• Field of Search: 62/457,471 220/14 126/400
• US Class Current: 62/457.4
• CPC Class Codes: A47G 19/2288 with means for keeping liquid cool or hot
• CPC Class Codes: A47G 23/04 Containers with means for keeping food cool or hot A47G19/027, A47G19/127, A47G19/2288, A47G19/285, A47G23/0313 take precedence; for butter or cheese A47G19/26 ; thermally insulated vessels A47J41/00
• CPC Class Codes: A47J 41/0044 comprising heat or cold storing elements or material, i.e. energy transfer within the vessel
• CPC Class Codes: C09K 5/06 the change of state being from liquid to solid or vice versa
• CPC Class Codes: C09K 5/12 Molten materials, i.e. materials solid at room temperature, e.g. metals or salts
• CPC Class Codes: F28D 20/02 using latent heat
• CPC Class Codes: Y02E 60/14 Thermal energy storage

Abstract

This invention relates to food and beverage containers and more particularly to containers of the thermodynamic type capable of regulating the temperature of the food and beverage therein. The thermodynamic container disclosed herein comprises an outer wall of low thermal conductivity separated by an insulating material from an inner metal capsule of very high thermal conductivity having a heat-storage material disposed therein. Beverages too hot to drink melt the heat-storage material which in turn cools the beverage to a drinkable temperature within two minutes. Heat lost during the beverage'"'"''"'"'s cooling is then returned to the beverage to maintain it at a drinkable temperature as the heatstorage material resolidifies.

Claims

1. A thermodynamic container comprising an outer shell, a hollow internal capsule being attached to said outer shell so that a space is provided between said outer shell and said internal capsule, and a heat-storage material exhibiting a change of state in the range of 150* F. to 120* F. and contained inside of thE walls of said internal capsule.

2. A thermodynamic container as in claim 1 in which said internal capsule is adhesively bonded to said outer shell.

3. A thermodynamic container as in claim 1 in which said space between said internal capsule and said outer shell is filled with insulation material.

4. A thermodynamic container as in claim 1 in which said internal capsule is made of aluminum.

5. A thermodynamic container as in claim 1 in which said heat-storage material has the composition of essentially 45 percent aluminum powder and essentially 55 percent paraffin.

6. A thermodynamic container as in claim 2 in which said adhesive is a epoxypolysulfide adhesive.

7. A thermodynamic container as in claim 1, in which said insulation material is a plastic foam.

8. A thermodynamic container as in claim 1, in which said insulation material in felt.

9. A thermodynamic container as in claim 1 wherein said outer shell is composed of a material having a low thermal conductivity and said internal capsule is composed of a material with a high thermal conductivity.