US PATENT SUBCLASS 251 / 243
.~.~.~.~ Co-acts with lever

Current as of: June, 1999
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251 /   HD   VALVES AND VALVE ACTUATION

213  DF  MECHANICAL MOVEMENT ACTUATOR {10}
231  DF  .~ Lever {5}
236  DF  .~.~ Biased {3}
242  DF  .~.~.~ Spring {2}
243.~.~.~.~ Co-acts with lever

DEFINITION

Classification: 251/243

(under subclass 242) Apparatus wherein the spring co-acts with or through the lever to provide the bias to the valve.