Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1982-10-29
1985-07-09
Envall, Jr., Roy N.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
219385, 219378, 219209, 219399, 165DIG4, 252 72, C09K 506, H05B 100
Patent
active
045284393
ABSTRACT:
A portable thermally insulated case has an outer shell formed of a bottom wall and upwardly extending side walls integral with each other with integral rigid polyurethane foam adhering to the inner surface of each of the walls. A cover, which has rigid polyurethane foam on its inner surface, is hinged to the rear upwardly extending wall to close an access opening at the top of the outer shell. Each of the bottom and upwardly extending walls of the outer shell has a separate container in contact with the inner surface of the polyurethane foam and defining a recess therebetween. The cover has a container supported within the rigid polyurethane foam and substantially closing an access opening at the upper ends of the separate containers adjacent the upwardly extending walls so that the containers substantially surround any object within the recess. Each of the containers has a phase change material therein to supply heat to any object within the recess. Each of the containers of the outer shell has an electrical heating element in contact with its inner surface and connected by wires exteriorly of the case to enable heat to be supplied from an external power source to the phase change material to change it to its original state when the case is disposed at a location having an external power source.
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Guittar, N. L., "Temperature Stabilization Using Thermal Buffer", IBM Tech. Disc. Bull., vol. 20, No. 10, Mar. 1978, p. 4030.
Marney, Jr. O. Guy
McKinley, Jr. Henry J.
Envall Jr. Roy N.
Standard Oil Company
Stanley Timothy D.
Walberg Teresa J.
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