US PATENT SUBCLASS 246 / 2 R
TRAIN DISPATCHING

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

2 RTRAIN DISPATCHING {7}
3  DF  .~> Central signal control {2}
6  DF  .~> Train-order cab signal or train control
7  DF  .~> Train telegraphy or telephony {3}
14  DF  .~> Station, block, or train-order signals {3}
2 E  DF  .~> Orientation
2 F  DF  .~> Frequency
2 S  DF  .~> Spacing

Unofficial Alpha Subclasses: R E F S

DEFINITION

Classification: 246/2

(under the class definition) Systems and devices specially adapted for the control of train movements by train-orders or by their equivalents transmitted from a central or directing station.

SEE OR SEARCH CLASS

40, Card, Picture, or Sign Exhibiting,

541+, for number-display devices and similar markers displayed on trains to indicate car or train numbers or give other information useful to the train-dispatcher or other officials.

116, Signals and Indicators,

30, for train-markers referred to above, and subclass 173 for flags used as train-markers and for supports for such flags. 178, Telegraphy, appropriate subclasses for miscellaneous electric telegraph systems.

258, Railway Mail Delivery, appropriate subclasses indented thereunder, for devices for delivering train-orders to moving trains.

340, Communications: Electrical,

825.72, for radio remote control.

362, Illumination,

253, and 459+ for signal and indicating lights carried by engines and cars, and 253, and 478+ for illuminated train and engine markers.

379, Telephonic Communications, appropriate subclasses for miscellaneous electric telephone systems.

455, Telecommunications,

500+, for miscellaneous radio systems comprising a plurality of transmitter and/or receiver means with a central control station.