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US5277941: System to insulate and retain cold temperature

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Filing Information

Inventor(s) David A. Marshall ·
Assignee(s) MARSHALL DAVID A ·
Primary Examiner Van Balen; William J. ·
Application Number US7898728
Filing date 06/15/1992
Issue date 01/11/1994
Predicted expiration date 06/15/2012
U.S. Classifications 428/12  · 428/188  ·
International Classifications B32B 102  ·
Kind CodeA
International Classifications 42812;188;319.1;319.3;319.7 ·
1 Claims, No Drawings


Abstract

A unique system to insulate and retain the cold temperature of products, liquids, or materials of any type or nature. In the preferred embodiment, the system comprises a series of layers of material as follows: (1) a hard, durable plastic layer of polyvinyl chloride or similar material; (2) a layer of retardant aluminum; (3) a layer of styrofoam; (4) a layer of neoprene; (5) a cavity which is filled with dry ice through an input valve at the top of the system and which is purged through an escape or purge valve at the bottom of the system; the layers completely surround and envelope the cavity such that one closed system is created. The system could be made in any of many shapes and sizes to accommodate various industries, for example, the system constructed in the outer shape of a beer keg could constitute a jacket, which would be removable with hinges and buckles to keep kegs cold for up to 96 hours without refrigeration or ice. The system could be constructed in the appropriate shape and size for use in the emergency medical industry to transport vital organs or items which must be kept cold without the use of refrigeration. The system could be used to keep food products frozen during transportation. The concept would eliminate, in many applications, the need for refrigeration which would decrease consumption of electricity and which would have positive environmental effects by eliminating the use of freon and other chemicals consumed and released in the refrigeration process.

Independent Claims | See all claims (1)

  1. 1.1. A system consisting of a hard plastic outer layer applied in direct and total contact with a layer of retardant aluminum applied in direct and total contact with a layer of styrofoam of exactly the same size and shape as said layer of hard plastic and said layer of aluminum which layer of styrofoam is applied in direct and total contact with a layer of neoprene of exactly the same size and shape as said layer of styrofoam), said layers of plastic, aluminum, styrofoam and neoprene being arranged so as to form a cavity of a width equivalent to or greater than the said layers of plastic, aluminum, styrofoam and neoprene, said cavity being completely enveloped by said layers of plastic, aluminum, styrofoam and neoprene, said layers of plastic, aluminum, styrofoam and neoprene having a top end and a lower end, said top end having a valve through which dry ice will be introduced into said cavity, said valve having a secure, air-tight closure, said lower end having a purge valve through which the dry ice in its gaseous form shall be allowed to escape from said cavity, said valve having a secure, air-tight closure.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US3396923 DOW CHEMICAL CO Windecker Aug 1968
US3675377 GOODYEAR TIRE & RUBBER Suter Jul 1972
US4208469 Gulf Seal Corporation Dial Jun 1980
US4360984 Ruttenberg Nov 1982

Referenced By

Document NumberAssigneeInventorsIssue/Pub Date
US5974824 Cold Tap Marketing, Inc. Longin Galockin et al. Nov 1999
US5595320 Xerxes K. Aghassipour Jan 1997

Patent Family

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