US PATENT SUBCLASS 251 / 239
.~.~.~.~.~ Spring co-axial with valve arm


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}
237  DF  .~.~.~ Sliding contact {1}
238  DF  .~.~.~.~ Spring {1}
239.~.~.~.~.~ Spring co-axial with valve arm {2}
240  DF  .~.~.~.~.~.~> Spring stop on valve stem
241  DF  .~.~.~.~.~.~> Spring abuts valve stem guide


DEFINITION

Classification: 251/239

(under subclass 238) Valves wherein the spring is co-axial with the valve stem.