Thermostatic control device

Details Thermostatic control device Thermostatic control device

1977-12-29

1979-09-04

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With longitudinally expansible solid element

200 83P, 337136, H01H 3746, H01H 3774

Patent

active

041669967

ABSTRACT:
Movement of the diaphragm pad occasioned by change in pressure within the diaphragm in response to a change in sensed temperature causes the bowed actuating spring to increase or decrease the degree of flexure to actuate the switch. In order to accommodate the pressure variations induced by a wide range of ambient temperature conditions the diaphragm is preloaded by a second bowed spring. A cam mechanism can be provided to vary the flexure of the preloading spring to thereby adjust the temperature at which the switch will be actuated.

REFERENCES:
patent: 2738397 (1956-03-01), Slonneger
patent: 3202789 (1965-08-01), Morris
patent: 3984650 (1976-10-01), Budlane et al.

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