US PATENT SUBCLASS 251 / 220
.~.~.~.~ Coupling socket in screw

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

213  DF  MECHANICAL MOVEMENT ACTUATOR {10}
215  DF  .~ Plural motions of valve {5}
218  DF  .~.~ Encased {2}
219  DF  .~.~.~ Threadlessly coupled to screw {1}
220.~.~.~.~ Coupling socket in screw

DEFINITION

Classification: 251/220

(under subclass 219) Devices in which the coupling socket is formed in the screw element.