Warming devices and method using a material with a solid-solid p

Details Warming devices and method using a material with a solid-solid p Warming devices and method using a material with a solid-solid p

1989-04-18

1991-01-08

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055E, 219439, 219462, 99DIG14, 126246, H05B 680

Patent

active

049837982

ABSTRACT:
Warming devices are described having solid organic particulates that are solid at room temperature and which exhibit a meso-crystalline transition temperature within a range of about 30.degree. to about 200.degree. C. The particles can be heated by a variety of methods such as microwave radiation or hot liquids. Contemplated objects include vacuum bottles, coffee mugs, stadium pads, foot warming boxes, mittens, caps, snowsuits, and other wearing apparel. The solid particles act as a reusable heat reservoir to release heat over an extended period of time or absorb ambient heat and serve a protective function.

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Murrill et al., "Solid-Solid Phase Transition as Determined by Differential Scanning Calorimetry", Thermochim. Acta., 1 (1970), pp. 239-246 and 409-414, and in Thermochim. Acta, 3 (1970) 311-315.

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