US PATENT SUBCLASS 246 / 290
.~.~ Trailing fly-back

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}
290.~.~ Trailing fly-back {1}
291  DF  .~.~.~> Spring actuated

DEFINITION

Classification: 246/290

(under subclass 270) Subject matter including a switch stand provided with means for allowing the switch-rails to move apart and fly back against the resistance of the mechanism of the stand upon the passage of each trailing wheel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

144, 278, 284, and 393+, for switch-stand structure.

237+, and 243+, for fly-back mechanism.

319+, for trailing-fly-back mechanism.