US PATENT SUBCLASS 246 / 320 A
.~.~.~.~ Dash pot

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}
319  DF  .~.~ Trailing fly-back {1}
320 R  DF  .~.~.~ Spiral spring {2}
320 A.~.~.~.~ Dash pot

Unofficial Alpha Subclasses: R A

DEFINITION

Classification: 246/320

(under subclass 319) Subject matter in which the switch is returned automatically to its original position by the power on one or more spiral springs.