Electricity: electrothermally or thermally actuated switches – Thermally actuated switches – With bimetallic element
Patent
1994-09-01
1996-12-17
Picard, Leo P.
Electricity: electrothermally or thermally actuated switches
Thermally actuated switches
With bimetallic element
337368, 337319, 337347, 337375, 200407, 200448, H01H 3754, H01H 3712, H01H 3718, H01H 520
Patent
active
055857744
ABSTRACT:
A condition-responsive electric switch mechanism having a snap-acting bistable spring switch element carrying a movable contact, and an actuator movable in response to a detected condition to operate the bistable spring switch element. The spring switch element is capable of snapping between a circuit open position in which the movable contact is spaced from a fixed contact and a circuit closed position in which the movable contact engages the fixed contact. The spring switch element has a head mounting the movable contact thereon, and a pair of arms extending outwardly from the head being formed free of connection to one another at their distal ends opposite the head. The arms are fixed to a first terminal blade at their distal ends in a configuration deflected from the relaxed position so as to stress the switch element making it capable of snapping between the circuit open and circuit closed positions for a wide variety of preset contact gaps. The spring switch element is also capable of maintaining high contact force around the switch point.
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General Electric Company
Krisher, Jr. Ralph E.
Picard Leo P.
Ryan Stephen T.
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