H - Electricity – 01 – H
Patent
H - Electricity
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H01H 15/06 (2006.01) H01H 1/20 (2006.01) H01H 50/54 (2006.01)
Patent
CA 1047083
AUXILIARY INTERLOCK SWITCH WITH INTERCHANGEABLE AND REVERSIBLE CHISEL-SHAPED CONTACTS AND SPRING BIASING MECHANISM ABSTRACT OF THE DISCLOSURE 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.
251796
Gallatin Paul M.
Halbach Edward A.
LandOfFree
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