Thermostatic probe switch apparatus

Details Thermostatic probe switch apparatus Thermostatic probe switch apparatus

1990-12-14

1991-12-31

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With longitudinally expansible solid element

337382, 337391, H01H 3712, H01H 3746

Patent

active

050775375

ABSTRACT:
A probe thermostat is shown having a single, stamped metal channel having a first coefficient of expansion coupled to a rod having a second, different, coefficient of expansion. An electrically insulating block is mounted on the channel which in turn cantilever mounts a pair of electrically conductive arms spaced one over the other with electrical contacts disposed on the arms in facing relation to one another. A molded plastic adjustment cam snaps into slots formed in the channel to adjust the position of the lower arm. A hinge formed in the channel and connected to the rod causes movement of the top arm as the temperature of the thermostat changes to cause the contacts to move into and out of engagement with each other.

REFERENCES:
patent: 4166995 (1979-09-01), Pecker et al.
patent: 4754253 (1988-06-01), Slack et al.

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