US PATENT SUBCLASS 246 / 343
.~.~.~.~.~ 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}
336  DF  .~.~.~ Longitudinal motion {4}
341  DF  .~.~.~.~ Horizontal swing {2}
343.~.~.~.~.~ Double

DEFINITION

Classification: 246/343

(under subclass 341) Subject matter in which pairs of track devices are used, 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:

340, 349, 355, 356, and 357, for double-track devices.