US PATENT SUBCLASS 246 / 274
.~ Switch-connected frogs

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

270 R  DF  VEHICLE-ENERGY ACTUATION {11}
274.~ Switch-connected frogs

DEFINITION

Classification: 246/274

(under subclass 270) Subject matter having a switch actuated by a track-trip and mechanically connected with one or more movable-rail frogs, so as to secure for the train an unbroken line of rails.

SEE OR SEARCH THIS CLASS, SUBCLASS:

275, 382+ and 468+, for frog structures.

382, and apparatus indented subclasses, for movable-rail frogs.