Electricity: electrothermally or thermally actuated switches – Thermally actuated switches – With bimetallic element
Patent
1997-02-11
1998-08-04
Picard, Leo P.
Electricity: electrothermally or thermally actuated switches
Thermally actuated switches
With bimetallic element
337342, 337349, 200451, 200447, 200407, H01H 3754
Patent
active
057900108
ABSTRACT:
An electrical switch incorporating a snap-acting M-blade is actuated by a lever requiring a low actuation force and is actuated by a bridge engaging a critical region of the M-blade's double-loop end to provide an extremely low differential. Together, the means for actuating cover a broad range of applications. Additional features include a snap-acting M-blade actuated by a second snap-acting device, and the lever comprising an integral tab that serves as a pivot point.
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"Tiny Spring Improves Thermostat"; Design News; Author: R. N. Boggs; pp. 96, 97; Published Apr. 8, 1991; Newton, MA 02158.
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Harter Robert J.
Picard Leo P.
Vortman Anatoly
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