US PATENT SUBCLASS 246 / 243
.~.~.~ Fly-back

Current as of: June, 1999
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246 /   HD   RAILWAY SWITCHES AND SIGNALS

218  DF  ELECTRIC ACTUATION {9}
221  DF  .~ Motor systems {5}
240  DF  .~.~ Rotary armature {3}
243.~.~.~ Fly-back {1}
244  DF  .~.~.~.~> Latch or clutch release

DEFINITION

Classification: 246/243

(under subclass 240) Subject matter in which a rotary armature is set and held against gravity or a spring, which restores it to its original position upon the cessation of current.

SEE OR SEARCH THIS CLASS, SUBCLASS:

237, for similar subject matter used with a reciprocating armature.