US PATENT SUBCLASS 251 / 219
.~.~.~ Threadlessly coupled to 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.~.~.~ Threadlessly coupled to screw {1}
220  DF  .~.~.~.~> Coupling socket in screw

DEFINITION

Classification: 251/219

(under subclass 218) Devices in which the actuator is connected to a screw element of the valve by threadless, longitudinally splined, or slip coupling means.