Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – With bimetallic elements
Patent
1992-04-01
1993-08-03
Broome, Harold
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
With bimetallic elements
337102, H01H 6102
Patent
active
052333256
ABSTRACT:
A thermostat including a heater without a positive temperature characteristic thermistor or an alumina substrate. The thermostat with a filmy heater includes two terminals (2a, 3a) to be connected with an external circuit, a fixed plate (2) connected with one of said terminals and on which a static contact point (2b) is mounted, a resilient plate (3) connected with the other of the two terminals and on which a movable contact point (3b) is mounted, a bimetal (5) which is so deformed, when temperature of the bimetal exceeds a predetermined temperature, to deform the resilient plate so that the movable contact point is separated from the static contact point, and heater (6) mounted in parallel with said fixed plate and the resilient plate. The heater is an electro-conductive film (6a) on an insulative film (6b), which is incorporated in the thermostat.
REFERENCES:
patent: 3453577 (1969-07-01), D'Entremont
patent: 3593248 (1971-07-01), Shepherd et al.
patent: 4862132 (1989-08-01), Hollweck
Broome Harold
Uchiya Thermosatat Co.
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