Electricity: circuit makers and breakers – Contact moved by sudden release of stored energy
Reexamination Certificate
2007-06-01
2009-10-06
Luebke, Renee S (Department: 2833)
Electricity: circuit makers and breakers
Contact moved by sudden release of stored energy,
C200S401000, C218S153000, C335S171000
Reexamination Certificate
active
07598468
ABSTRACT:
A time delay mechanism is provided for a circuit breaker stored energy assembly including a mount, a spring coupled to the mount, at least one charging mechanism for charging the spring to store energy, at least one actuator for releasing the stored energy, and a drive assembly for transferring the stored energy into movement of the circuit breaker operating mechanism. First and second trip shafts of the time delay mechanism are pivotably coupled to the mount. Linking elements interconnect the first and second trip shafts. A trip catch and a drive lever are coupled to the first trip shaft. The linking elements and a damper, which is connected to the drive lever, contribute to a delay from a first time that the first trip shaft initially moves, to a second time that the second trip shaft moves to release the trip catch. The damper is adjustable to adjust the delay.
REFERENCES:
patent: 4683451 (1987-07-01), Grunert et al.
patent: 4743876 (1988-05-01), Milianowicz et al.
patent: 5938008 (1999-08-01), Wehrli et al.
patent: 6486758 (2002-11-01), Olszewski et al.
patent: 6864450 (2005-03-01), Chen et al.
Benke James J.
Chen Steven Z.
Otis Collin C.
Eaton Corporation
Fishman Marina
Luebke Renee S
Moran Martin J.
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