Mechanical displacement amplifier and thermostat embodying same

Details Mechanical displacement amplifier and thermostat embodying same Mechanical displacement amplifier and thermostat embodying same

1987-01-28

1988-04-05

Broome, H.

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With longitudinally expansible solid element

337318, H01H 3746, H01H 3774

Patent

active

047361824

ABSTRACT:
A mechanical displacement amplifier is disclosed in which a displacement amplifying spring member essentially in the shape of a shallow V is positioned between a reference point structure and a displacement member so as to buckle in response to movement of the displacement member towards the reference point structure. A dimple is provided adjacent the buckling point of the spring member to prevent it from straightening entirely. A thermostat embodying the mechanical displacement amplifier is also disclosed, in which a push rod between a microswitch and the buckling point of the spring member actuates the microswitch. A temperature adjustment dial positions the reference point structure, and a temperature sensing unit is the displacement member.

REFERENCES:
patent: 2483670 (1949-10-01), Reingruber
patent: 3030475 (1962-04-01), Glaberson
patent: 3158718 (1964-11-01), McCarrick

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