Electric blanket or pad having improved positive temperature...

H - Electricity – 05 – B

Patent

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Details

309/14, 309/84,

H05B 1/00 (2006.01) H05B 3/14 (2006.01) H05B 3/34 (2006.01) H05B 3/56 (2006.01)

Patent

CA 1244863

Abstract of the Disclosure An electrically heated device, heating pad or mattress pad having a heating cable comprising two conductors separated by a layer of positive temperature coefficient material wherein the electrical power supplied to the conductors produces its primary I2R heating effect in the PTC material and the two ends of each of the conductors are connected together and each conductor has means to connect it to one power supply terminal.

489350

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