Switch structure
AssigneeWestinghouse Electric Corp.
InventorsRobert J. Johnston, Stephen G. Layciak, Stephen S. Dobrosielski
Life of this patent
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Abstract
A switch structure characterized by a pushbutton-rotatable switch handle and a plurality of switch blocks mounted in tandem, the switch blocks comprising molded base and cover portions which provide an insulating barrier between the moving and stationary contact arms for increased current capabilities, and the switches having reciprocable switch operating plungers which are actuated either together or separately by longitudinal or rotary movement of the switch actuator.
Claims2
A pushbutton and rotary selector switch comprising an operator and at least one switch structure, the operator comprising a tubular housing and an actuator, the actuator being movable longitudinally and rotatably in the housing, an annular cam on the actuator, the switch structure having a movable contact operating member to effect opening and closing of a circuit through the switch structure, said member comprising a reciprocable plunger, the actuator comprising an annular end zone engageable with a portion of the end of the plunger to effect movement of the plunger when the actuator is moved longitudinally against the plunger, the annular cam being slidably mounted on the actuator to enable retraction of the cam when the actuator is moved longitudinally, the annular cam having a cam surface engaging another portion of the end of the plunger to effect movement of the plunger when the actuator is rotated, and means biasing the cam to the unretracted position on the actuator.
Dependencies are inferred from the claim text.