US PATENT SUBCLASS 246 / 287
.~.~.~.~.~ Coaxial spring

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  DF  .~.~.~.~ Spring-clutch {1}
287.~.~.~.~.~ Coaxial spring

DEFINITION

Classification: 246/287

(under subclass 286) Subject matter including a compressed spiral spring, concentric with the revolving spindle of the stand, the so-called "Ramapo" type of stand being here included.