Reusable warmers of the type employing a super-cooled solution a

Details Reusable warmers of the type employing a super-cooled solution a Reusable warmers of the type employing a super-cooled solution a

1990-06-15

1991-10-22

Yeung, James C.

Stoves and furnaces

Heaters

Chemical

126204, 128403, F24J 100

Patent

active

050585630

ABSTRACT:
The present invention provides reusable warmers of the supersaturated solution type that are substantially free of saddlebagging. The reusable warmers comprise a flexible container, and located within the container, a supercooled salt solution, an activator for initiating crystallization of the supercooled salt solution, and a gelling agent, the gelling agent being present in sufficient quantity to convert the salt solution to a gel.

REFERENCES:
patent: 4295517 (1981-10-01), Guex et al.
patent: 4572158 (1986-02-01), Fiedler
patent: 4574051 (1986-03-01), Matthews et al.
patent: 4780117 (1988-10-01), Lahey
patent: 4865012 (1989-09-01), Kelley
patent: 4872442 (1989-10-01), Manker
patent: 4880953 (1989-11-01), Manker

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