Switch operating mechanism

Electricity: circuit makers and breakers – Contact moved by sudden release of stored energy

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Details

200426, 200430, H01H 500

Patent

active

052265285

ABSTRACT:
A switch actuator includes an operator plate which provides a structure for mounting the actuator and for supporting the remaining parts. An operator shaft receives torque from an operating handle and via mechanical coupling, transmits torque to a torque plate subassembly. The torque plate compresses a torsion spring which provides temporary energy storage for the switch actuator. The torsion spring acts on a reaction plate subassembly which mechanically couples the torque generated by the spring to a rotor tube to operate the switch contacts. A spring guide subassembly maintains the spring in a predefined region to prevent the spring from deforming into a non-energy storing position during operation. The operator shaft, torque plate, reaction plate, spring guide, and spring are nested substantially concentrically about a predefined mounting axis. Left and right cam followers and a pivot lever combine to form a latch mechanism to prevent the switch actuator from changing position except when operated by a user.

REFERENCES:
patent: 2336036 (1943-12-01), Rypinski
patent: 2820119 (1958-01-01), Miller et al.
patent: 3590183 (1971-06-01), Leonard
patent: 4253003 (1981-02-01), Evans et al.
patent: 4360720 (1982-11-01), Alsch
patent: 4412116 (1983-10-01), Golub
patent: 4507641 (1985-03-01), Poth
patent: 4554420 (1985-11-01), Golub
patent: 4578551 (1986-03-01), Lin
patent: 4616118 (1986-10-01), Gasnier et al.

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