Thermally sensitive electrical switch

Details Thermally sensitive electrical switch Thermally sensitive electrical switch

1977-09-22

1979-05-15

Harris, George

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

Expansible or vaporizable fluid actuated

337399, 200264, 338100, H01H 3736

Patent

active

041550625

ABSTRACT:
A thermally sensitive switch has a thermally conductive body within which is a chamber into which extends at least one electrically conductive terminal. Occupying the chamber is an elastomeric body which is expansible and contractile in response to increases and decreases, respectively, in its temperature. The elastomeric body may be normally conductive or normally nonconductive, but in either event is conductive when in its expanded condition. When in its expanded, conductive condition, the body engages the terminal and is operable to establish a current path through the body to the terminal. The body may function as an on-off switch or as a rheostat, depending upon the composition of the body.

REFERENCES:
patent: 3386067 (1968-05-01), Costanzo
patent: 3800112 (1974-03-01), DuRocher
patent: 3839694 (1974-10-01), DuRocher et al.
patent: 3952173 (1976-04-01), Tsuji et al.
patent: 3974470 (1976-08-01), DuRocher

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