US PATENT SUBCLASS 246 / 181
.~.~.~ Mechanical actuation

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

167 R  DF  CAB SIGNAL OR TRAIN CONTROL {20}
177  DF  .~ Block entrance initiated {1}
178  DF  .~.~ Electric or magnetic control {3}
181.~.~.~ Mechanical actuation

DEFINITION

Classification: 246/181

(under subclass 178) Subject matter having control devices whose actuation is initiated by mechanical means, such as track-trips directly or indirectly acting upon the cab-signals and train-control devices.

SEE OR SEARCH THIS CLASS, SUBCLASS:

167, and subclasses mentioned in the search notes appended thereto, for cab and control features.