Battery warmer

Details Battery warmer Battery warmer

1983-10-03

1986-05-27

Shaw, Clifford C.

Electric heating

Heating devices

Combined with diverse-type art device

219202, 219504, 219521, H05B 100

Patent

active

045916926

ABSTRACT:
A battery warmer includes a positive temperature coefficient (PTC) element of a size to maintain the contents of a battery to which it is attached in the range of 45.degree. to .phi..degree. F. in ambient temperatures of -30.degree. to 75.degree. F., and a housing for the PTC element, preferably of foamed plastic. The housing is mounted to a flat side of the battery, either adhesively or mechanically. A method of making the warmer includes securing paper to two broad, parallel surfaces of the housing to provide one surface that will take adhesive and another to bear printed instructions, and which together inhibit warping of the housing during its manufacture.

REFERENCES:
patent: 984867 (1911-02-01), Tirrill
patent: 2626971 (1953-01-01), Mansoff
patent: 3156813 (1964-11-01), Trainor
patent: 3564199 (1971-02-01), Blaha
patent: 3940591 (1976-02-01), Ting
patent: 4037082 (1977-07-01), Tamada
patent: 4313048 (1982-01-01), Holbrook
patent: 4314144 (1982-02-01), Wojtecki

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