US PATENT SUBCLASS 246 / 222
.~.~ Return-indication-current generation

Current as of: June, 1999
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246 /   HD   RAILWAY SWITCHES AND SIGNALS

218  DF  ELECTRIC ACTUATION {9}
221  DF  .~ Motor systems {5}
222.~.~ Return-indication-current generation

DEFINITION

Classification: 246/222

(under subclass 221) Subject matter whereby when the switch or signal movement has been accomplished a return-indication current is generated and sent back to the actuating devices to operate indicators, release operating-levers, locks, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

135, 137+, 141, and 142, for other devices and systems having means for indicating the operation of a switch or signal.