Heater for electric blanket

Details Heater for electric blanket Heater for electric blanket

H - Electricity

05

B

H05B 1/00 (2006.01) F21V 7/00 (2006.01) F24D 19/02 (2006.01) H05B 1/02 (2006.01) H05B 3/08 (2006.01) H05B 3/34 (2006.01)

Patent

CA 2476489

An electric blanket (11) connectable to a power source is provided. The electric blanket includes first and second heating wires (14 and 16) connected in series and a monitoring wire (18) positioned therebetween. The monitoring wire (18) is engageable with at least one of the heating wires in response to a predetermined temperature. A cutout (20) interconnects the heating wires (14 and 16) to a power source. A monitoring circuit triggers the cutout (20) so as to disconnect the heating wires (14 and 16) from the power source in response to engagement of the monitoring wire (18) with one of the heating wires (14 and 16).

L'invention porte sur une couverture (11) électrique raccordable à une alimentation et comportant: un premier, et un deuxième conducteur chauffant (14 et 16) montés en série, un conducteur de surveillance (18) placé entre eux et entrant en contact avec l'un au moins des conducteurs chauffants à une température prédéterminée, et un interrupteur (20) reliant les conducteurs électriques (14 et 16) à l'alimentation. Un circuit de surveillance actionne l'interrupteur (20) pour déconnecter les conducteurs chauffants (14 et 16) de l'alimentation lorsque le conducteur de surveillance (18) entre en contact avec l'un des conducteurs chauffants (14 et 16).

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