Electricity: circuit makers and breakers – Solid contact – Reciprocating actuator
Patent
1998-05-07
2000-05-23
Friedhofer, Michael
Electricity: circuit makers and breakers
Solid contact
Reciprocating actuator
200401, 200 5001, H01H 900
Patent
active
060668210
ABSTRACT:
Electrical switching apparatus such as a power circuit breaker, network protector or switch has a self-supporting operating mechanism module including a cage formed by a pair of side plates rigidly clamped in spaced relation by spacers. The cage supports all of the operating mechanism components including a helical compression close spring mounted fully between the side plates and coupled to a cam member through a rocker in a manner which maintains the forces longitudinal to the spring. The cam member has a charging cam with a charge profile for compressing the close spring and a close profile through which the spring drives the cam member to effect a controlled release of stored energy to close the contacts of the apparatus. A close prop, spring biased to an unlatched position, is latched to secure the close spring in the charged state by a latch assembly reset by a reset lever separate from the close prop which in turn is reset by rotation of the cam member during charging. An interlock prevents release of the close spring when the contacts are closed or the trip release is actuated. An indicator actuated by a driver pivoted against the cam shaft snaps from a DISCHARGED to a CHARGED indication as the close spring becomes fully charged and the driver drops into a notch created by a flat on the cam shaft. A snap action open/closed indicator for the switch contacts is also provided.
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Doran Raymond Clyde
Phillips Norman Joseph
Rakus Paul Richard
Stewart Suzanne Marie
Ulerich Phillip Lloyd
Eaton Corporation
Friedhofer Michael
Moran Martin J.
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