US PATENT SUBCLASS 246 / 276
.~.~ Spring rail

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

270 R  DF  VEHICLE-ENERGY ACTUATION {11}
275  DF  .~ Continuous-rail frogs {1}
276.~.~ Spring rail

DEFINITION

Classification: 246/276

(under subclass 275) Subject matter having continuous-rail frogs which yield against the action of springs or the resilience of the moving rails, to the lateral pressure of trailing wheels.