Adjustable temperature thermostat

Details Adjustable temperature thermostat Adjustable temperature thermostat

1986-10-29

1988-06-28

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With longitudinally expansible solid element

337382, 337391, H01H33712, H01H33746

Patent

active

047542535

ABSTRACT:
A thermostatic switch is shown having a body supporting a temperature sensing probe formed of a rod of one thermal coefficient of expansion connected to a channel of a different thermal coefficient of expansion. The difference in expansion between the rod channel is translated through a hinge to an overbalance type switch mounted on the body. The temperature at which the switch actuates is adjustable through an element movable toward and away from the switch by a cam mechanism as well as an independent threaded adjustment. The switch is shown in one embodiment as having an integral movable switch arm and loading spring and in a second embodiment as having a discrete movable switch arm and a discrete loading spring.

REFERENCES:
patent: 2793270 (1957-05-01), Burch et al.
patent: 4166995 (1979-09-01), Pecker et al.

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