US PATENT SUBCLASS 200 / 50.37
.~.~ Sequentially operated

Current as of: June, 1999
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200 /   HD   ELECTRICITY: CIRCUIT MAKERS AND BREAKERS

50.01  DF  INTERLOCKING {4}
50.32  DF  .~ Between plural switches {2}
50.37.~.~ Sequentially operated {3}
50.38  DF  .~.~.~> Grounding transformer switch
50.39  DF  .~.~.~> Disconnect switch
50.4  DF  .~.~.~> With handle

DEFINITION

Classification: 200/50.37

Sequentially operated:

(under subclass 50.32) Subject matter wherein the interlocking arrangement for two or more operating mechanisms of two or more switches in series conducting relation whereby one switch must be opened before the other switch or switches can be opened.