US PATENT SUBCLASS 246 / 125
ELECTRIC AUTOMATIC HIGHWAY SIGNALS, MINE DOORS, AND GATES


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

125ELECTRIC AUTOMATIC HIGHWAY SIGNALS, MINE DOORS, AND GATES {3}
126  DF  .~> Car-actuated controller {1}
128  DF  .~> Normally open track circuit {1}
130  DF  .~> Normally closed track circuit


DEFINITION

Classification: 246/125

(under the class definition) Systems in which highway-crossing signals, gates, and mine-doors are actuated or controlled from the moving train or vehicle by electrical means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

111, 260, 293, and 473, and appropriate indented subclasses for signal structure.

221, and the appropriate indented subclasses, for the electric actuation of switches and signals other than those used at highway-crossing.

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

261, and 272, for gate structure.

SEE OR SEARCH CLASS

49, Movable or Removable Closures, appropriate subclasses, for closures (gates) and closure-actuating mechanism.