Anisotropically bendable heating pad

Details Anisotropically bendable heating pad Anisotropically bendable heating pad

1991-08-29

1992-09-29

Reynolds, Bruce A.

Electric heating

Heating devices

With heating unit structure

219212, 219527, 219528, 128399, H05B 334, A61F 700

Patent

active

051515784

ABSTRACT:
An electric heating pad is provided with an anisotropic stiffening member that provides considerable rigidity in a first direction and considerable flexibility in a second direction transverse to the first direction. The stiffening member is provided with many elongate parallel corrugations, ridges or channels to provide unidirectional stiffness in the direction of the long axis of the channels. When the heating pad is used in a vertical position with the channels running vertically, the pad is prevented from collapsing or folding over on itself by the stiffening member while it is flexible in the horizontal direction to conform to a body part. This feature is especially useful for heating an aching back while sitting upright. The pad is also useful for wrapping around a limb and is provided with a strap for that purpose.

REFERENCES:
patent: 2797296 (1957-06-01), Fowler et al.
patent: 2953671 (1960-09-01), Allen
patent: 3281578 (1966-10-01), Chapman
patent: 3539767 (1970-11-01), Eisler
patent: 3906185 (1975-09-01), Gross et al.
patent: 4021640 (1977-05-01), Gross et al.
patent: 4736088 (1988-04-01), Bart

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