US PATENT SUBCLASS 246 / 330
.~.~.~ Traffic protected


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}
330.~.~.~ Traffic protected


DEFINITION

Classification: 246/330

(under subclass 322) Subject matter including track mechanism normally withdrawn from actuating position, so that ordinary street traffic has no power to either throw the switch or damage the mechanism, the track device being automatically placed in actuating position by the approaching car, so that it can be actuated by the switch-throwing means.