US PATENT SUBCLASS 246 / 253
.~ Switch or signal actuated controllers


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

218  DF  ELECTRIC ACTUATION {9}
253.~ Switch or signal actuated controllers


DEFINITION

Classification: 246/253

(under subclass 218) Subject matter in which a circuit controller is actuated by the motion of signals, switches, and other movable elements, sometimes known in the art as "switch-boxes".

(1) Note. In some of the multiple-circuit switch-boxes contained in this subclass a predetermined sequence of operation of the switches, signals, and other movable elements thereby controlled is provided for.

SEE OR SEARCH THIS CLASS, SUBCLASS:

107, 124, 131+, 176, and 220, for predetermined sequences of actuation.

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