US PATENT SUBCLASS 246 / 356
.~.~.~.~.~ Double

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}
351  DF  .~.~.~.~ Vertical motion {3}
356.~.~.~.~.~ Double {1}
357  DF  .~.~.~.~.~.~> Transverse lever connection

DEFINITION

Classification: 246/356

(under subclass 351) Subject matter having pairs of connected track-trips, each moving the switch in a direction opposite from the other.

(1) Note. Both devices of the pair must be located either in front of or behind the switch, for when placed in tandem, with the switch between them, they are not double, but become independent means for switch setting and resetting, respectively.

SEE OR SEARCH THIS CLASS, SUBCLASS:

313, and 350, for track-trips moving transversely.

340, 343, 349, and 355, for double trips.