US PATENT SUBCLASS 246 / 76
.~.~.~.~ Track trip

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

20  DF  BLOCK-SIGNAL SYSTEMS {4}
27  DF  .~ Automatic {5}
28 R  DF  .~.~ Electric {18}
62  DF  .~.~.~ Cab signal or train control {7}
76.~.~.~.~ Track trip

DEFINITION

Classification: 246/76

(under subclass 62) Systems includes electrically-actuated track-detents or obstacles mechanically actuate mechanism on moving trains, such as brake-valves, levers, circuit-closers, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

167+, and all subclasses mentioned in the search notes appended thereto, for track-detents used in various systems of block, frequently for actuating the cab and control mechanism.

201+, for the structure of the track-detent.