Anti-overload operating linkage for enclosed interlocked recepta

Details Anti-overload operating linkage for enclosed interlocked recepta Anti-overload operating linkage for enclosed interlocked recepta

1982-11-10

1985-03-19

Pellinen, A. D.

Electricity: circuit makers and breakers

Interlocking

Between plural switches

74470, 200153V, H01H 920

Patent

active

045061211

ABSTRACT:
A force override compensating device as one component of the mechanical operating linkage in an electrical socket interlocked dead front safety switch or circuit breaker. Distinct input and output members urged into rigid relation with each other by a spring bias mechanism function as a solid link under normal circumstances. With the interlocking mechanism immobilized, the bias mechanism permits waste movement of the input member relative output member, if an attempt is made erroneously to activate the device using such force as would damage any of the immobilized linkage elements of the locked device. The bias mechanism reverse waste movement of the input member when the erroneously applied force is released. Three embodiments of the invention are described: slidably mounted input and output members preloading therebetween a compression spring; pivotally connected input and output members having an extension spring under tension resisting their pivoting; and rotationally secured input and output members being torsion spring biased therebetween.

REFERENCES:
patent: 2332633 (1943-10-01), Green
patent: 3055226 (1962-09-01), Kiessling
patent: 3575565 (1971-04-01), Silvius
patent: 3633435 (1972-01-01), Farr
patent: 4150271 (1979-04-01), McMillen
patent: 4210788 (1980-07-01), Stranczek

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