US PATENT SUBCLASS 246 / 350
.~.~.~.~ Double acting

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

270 R  DF  VEHICLE-ENERGY ACTUATION {11}
314  DF  .~ Switches, automatic {6}
322  DF  .~.~ Track mechanism {13}
344  DF  .~.~.~ Transverse motion {4}
350.~.~.~.~ Double acting

DEFINITION

Classification: 246/350

(under subclass 344) Subject matter having track devices which can be acted upon at two different contact-points, whereby the switch can be thrown in either direction.

SEE OR SEARCH THIS CLASS, SUBCLASS:

230, 236, 297, 327, 342, 347+, and 354, for double-acting track-trips.