Electricity: circuit makers and breakers – Contact moved by sudden release of stored energy
Patent
1987-10-30
1989-07-04
Luebke, Renee S.
Electricity: circuit makers and breakers
Contact moved by sudden release of stored energy,
74 97, H01H 330
Patent
active
048453242
ABSTRACT:
Apparatus for opening and closing a switch, which apparatus comprises a lever mounted on a frame for pivotal movement between a first position and a second position, a first spring biasing the lever from the second position to the first position, a cam and follower for effecting pivotal movement of the lever from the first position to the second position against the influence of the first spring, a step on the cam for permitting movement of the lever from the second position to the first position under the influence of the first spring after the lever has moved from the first position to the second position, a member adapted to be connected to the switch and movable between a switch opening position and a switch closing position, which member is movable to the switch closing position in response to movement of the lever from the second position to the first position, a second spring displaceable between extended and contracted conditions, which second spring is extended to the extended condition in response to movement of the member to the switch closing position, a latch for releasably retaining the second spring in the extended condition, and mechanism for releasing the latch and thereby also releasing the second spring from the extended condition for movement to the retracted condition so as thereby to displace the member to the switch opening position.
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Holmgren Nils V.
Martin Donald R.
Blish Nelson A.
Cooper Power Systems, Inc.
Luebke Renee S.
Scott Eddie E.
Thiele Alan R.
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