US PATENT SUBCLASS 246 / 153
.~.~.~.~ Counterweight

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

131  DF  INTERLOCKING {8}
143  DF  .~ Manual actuation {3}
147  DF  .~.~ Mechanical locking {5}
152  DF  .~.~.~ Compensators {1}
153.~.~.~.~ Counterweight {1}
154  DF  .~.~.~.~.~> Intermittent grip

DEFINITION

Classification: 246/153

(under subclass 152) Subject matter having compensators in which the slack is taken up by means of one or more counterweights.