Auxiliary interlock switch with interchangeable and reversible c

Details Auxiliary interlock switch with interchangeable and reversible c Auxiliary interlock switch with interchangeable and reversible c

1975-09-22

1977-02-01

Scott, James R.

Electricity: circuit makers and breakers

Multiple circuit control

Reciprocating contact

200241, 200243, 200275, 200280, 200303, 335132, 335198, H01H 1500, H01H 112, H01H 4500

Patent

active

040063224

ABSTRACT:
An auxiliary interlock switch for a DC contactor has a reciprocable one-piece insulating contact carrier and plural bridging contacts interchangeably mounted thereon in alternative positions to provide different desired arrangements of normally open and normally closed contact sets with the stationary contact posts. The contact carrier has a return spring compressed within a spring-receiving cavity and elongated abutment-receiving apertures registering with opposite ends of said cavity through which an abutment member, that is releasably assembled to the contact carrier, may interchangeably freely extend to permit relative movement therebetween and against which one end of the return spring reacts to resiliently bias the contact carrier against reciprocation in one direction. The bridging contacts may be easily removed in the field and reassembled in desired contact configuration and are of resilient metal with bifurcated ends having "chisel" surfaces which provide high unit area contact pressure and plural points of engagement with each stationary contact post to thereby increase electrical reliability.

REFERENCES:
patent: 2756291 (1956-07-01), Peter
patent: 2924685 (1960-02-01), Burch
patent: 3253092 (1966-05-01), Landow
patent: 3272949 (1966-09-01), Lawrence
patent: 3320392 (1967-05-01), Mullen et al.
patent: 3324270 (1967-06-01), Lacan
patent: 3544929 (1970-12-01), DiMarco et al.

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