Stoves and furnaces – Body warmers – Composition fuel
Patent
1974-09-25
1976-04-20
Camby, John J.
Stoves and furnaces
Body warmers
Composition fuel
126204, 126263, 44 3R, 5284, 5347, 252 70, 128399, 128403, A61F 706, F24J 100
Patent
active
039511278
ABSTRACT:
A flexible container having a substantially planar configuration encloses a first chemical having characteristics for being supercooled to maintain a liquid state even at temperatures below its melting point. A second chemical can be mixed with the first chemical in the container to initiate the crystallization of the first chemical at the substantially constant temperature of the melting point of the first chemical. The container can be enclosed in an insulation envelope to moderate the temperature of the device. The first chemical may include sodium thiosulfate pentahydrate which provides a desirable constant temperature of 48.degree. C. The second chemical may include sodium borate pentahydrate or sodium sulfite which provides the first chemical with a desirable sandy configuration during crystallization in the .alpha. pentahydrate form. The sodium borate pentahydrate or sodium sulfite goes into solution or chemically complexes with the sodium thiosulfate in a manner such that subsequent supercooling can be achieved. Recycling of the device can then be accomplished by releasing another portion of the second chemical into the container. The resulting constant temperature device is particularly effective for use as a warm baby mattress, a warm blanket, or a hot water bottle substitute.
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The Journal of Bone and Joint Surgery, Vol. 34-A, No. 2, Apr. 1952, p. 4.
Watson Susan Steves
Watson William Keith Ross
Camby John J.
Kay Laboratories, Inc.
Roston Ellsworth R.
Yuen Henry C.
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