US PATENT SUBCLASS 323 / 256
.~.~.~ With motor driven tap switch

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

Internet Version by PATENTEC © 1999      Terms of Use


323 /   HD   ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS

234  DF  OUTPUT LEVEL RESPONSIVE {6}
247  DF  .~ Using a transformer or inductor as the final control device {5}
255  DF  .~.~ Having a variable length winding (e.g., tapped) as the final control device {2}
256.~.~.~ With motor driven tap switch {1}
257  DF  .~.~.~.~> Including an electronic tube or a three or more terminal semiconductive device in control circuit

DEFINITION

Classification: 323/256

With motor driven tap switch:

(under subclass 255) Subject matter wherein the means to select between the several contacts is operated by a motor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

341, for external or operator controlled devices of this type.