US PATENT SUBCLASS 246 / 90
.~.~.~.~ Car-actuated controller

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}
87  DF  .~.~.~ Line-current supply {4}
90.~.~.~.~ Car-actuated controller {1}
91  DF  .~.~.~.~.~> Relay

DEFINITION

Classification: 246/90

(under subclass 87) Systems in which the circuit for actuating or controlling the signals is opened or closed by controllers actuated by the energy of the moving train.

SEE OR SEARCH THIS CLASS, SUBCLASS:

246+, and the subclasses mentioned in the search notes appended thereto, for various types of circuit-controllers.