Multiple-impact shock absorbing means for circuit interrupter an

Details Multiple-impact shock absorbing means for circuit interrupter an Multiple-impact shock absorbing means for circuit interrupter an

1984-08-13

1986-09-16

Marcus, Stephen

Electricity: circuit makers and breakers

Electric switch details

Contact

200153SC, 267162, H01H 360

Patent

active

046124292

ABSTRACT:
The kinetic energy generated by the rapidly moving contact and coupled operating mechanism of a tripped circuit breaker or similar apparatus is dissipated by a compressible shock-absorbing assembly comprising a loose stack of metal plates and interposed springs which is mounted on a stationary part of the breaker and is struck by a lever fastened to the main operating shaft of the breaker operating mechanism. The metal plates are movable toward and away from one another due to the resiliency of the springs and the resulting multiple impacts between the plates and advancing striker lever produces a momentum exchange phenomenon which quickly dissipates the kinetic energy and brings the breaker operating mechanism and movable contact to a smooth stop. The compressible multiple-impact assembly provides a compact shock absorbing means that is especially adapted for use in medium voltage circuit breakers (5 to 35 KV rating) of various types which is not only durable and efficient but very inexpensive and reliable. The improved shock absorber is also adapted for use in guns and the like which require a suitable means for counteracting the recoil produced when the gun is fired.

REFERENCES:
patent: 3544415 (1970-12-01), Price et al.
patent: 3674251 (1972-07-01), Tirabassi
patent: 4064383 (1977-12-01), Barkan
patent: 4267419 (1981-05-01), Maier et al.
patent: 4491709 (1985-01-01), Chabot et al.

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