US PATENT SUBCLASS 246 / 229
.~.~.~.~.~ Tandem contacts

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

218  DF  ELECTRIC ACTUATION {9}
221  DF  .~ Motor systems {5}
225  DF  .~.~ Reciprocating armature {4}
226  DF  .~.~.~ Controller-actuated switches {2}
227  DF  .~.~.~.~ Opposed magnets {2}
229.~.~.~.~.~ Tandem contacts

DEFINITION

Classification: 246/229

(under subclass 227) Subject matter in which two successive or tandem contacts or insulated sections of track or trolley-wire are connected to the two magnets or solenoids.

SEE OR SEARCH THIS CLASS, SUBCLASS:

233, for similar subject matter where tandem-contact switches are used.