US PATENT SUBCLASS 246 / 358
.~ Switch locks, automatic

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

270 R  DF  VEHICLE-ENERGY ACTUATION {11}
358.~ Switch locks, automatic

DEFINITION

Classification: 246/358

(under subclass 270) Subject matter having train-actuated devices, sometimes called "lock-bars", by which a moving train can lock or secure in place a switch over which it is passing or is a about to pass.

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322+, appropriate subclasses for track mechanism.