Calibrating adjustment of thermostat

Details Calibrating adjustment of thermostat Calibrating adjustment of thermostat

1975-07-11

1977-01-04

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With bimetallic element

337 57, 337 82, H01H 3720

Patent

active

040017524

ABSTRACT:
A thermostat includes a base plate supporting a switch and an ambient temperature sensing bimetal that actuates the switch. A set-point adjusting cam cooperates with the bimetal. An internally threaded bushing is supported upright on the base plate and is frictionally locked against rotation. The set-point adjusting cam is supported on a threaded shaft which screws into the bushing. The bushing is rotatable for fine calibration of the thermostat, while the threaded shaft is screwed into the bushing through an appropriate number of turns for coarse calibration.

REFERENCES:
patent: 2798131 (1957-07-01), Collier
patent: 3423713 (1969-01-01), Levinn
patent: 3670284 (1972-06-01), Fortier

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