US PATENT SUBCLASS 246 / 171
.~.~ Contact trips

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

167 R  DF  CAB SIGNAL OR TRAIN CONTROL {20}
170  DF  .~ Derailment {2}
171.~.~ Contact trips {1}
172  DF  .~.~.~> Frangible

DEFINITION

Classification: 246/171

(under subclass 170) Subject matter having a trip which on derailment comes into contact with the road-bed or traction-rail.

SEE OR SEARCH THIS CLASS, SUBCLASS:

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