US PATENT SUBCLASS 246 / 46
.~.~.~.~ Line-wire distant control

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


246 /   HD   RAILWAY SWITCHES AND SIGNALS

20  DF  BLOCK-SIGNAL SYSTEMS {4}
27  DF  .~ Automatic {5}
28 R  DF  .~.~ Electric {18}
41  DF  .~.~.~ Direct current, normally closed, track circuit {4}
46.~.~.~.~ Line-wire distant control {5}
47  DF  .~.~.~.~.~> Cab signal or train control {2}
50  DF  .~.~.~.~.~> Current characteristic
51  DF  .~.~.~.~.~> Overlapped blocks
52  DF  .~.~.~.~.~> Home and distant
53  DF  .~.~.~.~.~> Three position

DEFINITION

Classification: 246/46

(under subclass 41) Systems in which one or more line wires extending back the entire length of the block are used for controlling or actuating the distant signal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

26, 34+, 41+, 58+, 95, 98, 128+, and 130, for track-circuit systems.

39, 47 to 53 and 60, for line-wire systems of control.