US PATENT SUBCLASS 246 / 349
.~.~.~.~.~ Double

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

270 R  DF  VEHICLE-ENERGY ACTUATION {11}
314  DF  .~ Switches, automatic {6}
322  DF  .~.~ Track mechanism {13}
344  DF  .~.~.~ Transverse motion {4}
346  DF  .~.~.~.~ Swinging {2}
349.~.~.~.~.~ Double

DEFINITION

Classification: 246/349

(under subclass 346) Subject matter having pairs of track devices, each moving the switch in a direction opposite from the other.

(1) Note. Both devices of the pair must be located either in front of or behind the switch, for when placed in tandem, with the switch between them, they are not double, but become independent means for switch setting and resetting, respectively.

SEE OR SEARCH THIS CLASS, SUBCLASS:

339, 346 and 353, and appropriate indented subclasses, for swinging track mechanism.

340, 343, 355, and 356+, for double trips.

355, for levers stated moving vertically.