US PATENT SUBCLASS 246 / 322
.~.~ Track mechanism

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.~.~ Track mechanism {13}
323  DF  .~.~.~> Selective
324  DF  .~.~.~> Latch or clutch release {1}
326  DF  .~.~.~> Electric control
327  DF  .~.~.~> Alternate throw {1}
329  DF  .~.~.~> Three and multiple throw
330  DF  .~.~.~> Traffic protected
331  DF  .~.~.~> Rotary longitudinal connecting shaft
332  DF  .~.~.~> Cable and pulley connection
333  DF  .~.~.~> Longitudinal sprial cam
334  DF  .~.~.~> Rack and pinion
335  DF  .~.~.~> Bow spring
336  DF  .~.~.~> Longitudinal motion {4}
344  DF  .~.~.~> Transverse motion {4}

DEFINITION

Classification: 246/322

(under subclass 314) Subject matter not above classified whereby track-switches are actuated by the energy of an approaching vehicle.

SEE OR SEARCH THIS CLASS, SUBCLASS:

273, 274, 275, 278+, and 297+, for various types of track-trips used for actuating movable devices of various kinds.