US PATENT SUBCLASS 246 / 286
.~.~.~.~ Spring-clutch

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

270 R  DF  VEHICLE-ENERGY ACTUATION {11}
*  DD  .~ Switch stands, automatic {3}
284  DF  .~.~ Trailing setting {1}
285  DF  .~.~.~ Yielding rail {3}
286.~.~.~.~ Spring-clutch {1}
287  DF  .~.~.~.~.~> Coaxial spring

DEFINITION

Classification: 246/286

(under subclass 285) Subject matter in which a resisting force is furnished by the compression of a spring, caused by the slipping of a clutch or cam actuated by the pressure, upon the switch rail, of a car-wheel trailing through the switch.