US PATENT SUBCLASS 246 / 98
.~.~.~ Track-circuit control

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}
96  DF  .~.~ Electromechanical {3}
98.~.~.~ Track-circuit control

DEFINITION

Classification: 246/98

(under subclass 96) Subject matter having track circuits to control the traffic-controlling devices.

SEE OR SEARCH THIS CLASS, SUBCLASS:

26, 34+, 41+, 58+, 70, 95, 128, 129, 130, and 160, for the control of signals through track-circuits.

96+, and 263, for the electromechanical actuation of signals.

102, 103 and 262, for mechanical-motor systems.