US PATENT SUBCLASS 137 / 331
.~ Rotary motion of a reciprocating valve

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

330  DF  NON-VALVING MOTION OF THE VALVE OR VALVE SEAT {1}
331.~ Rotary motion of a reciprocating valve {2}
332  DF  .~.~> Turbine on valve
333  DF  .~.~> Manual rotating means

DEFINITION

Classification: 137/331

(under subclass 330) Apparatus which provides means for imparting rotary motion to a reciprocating valve.

SEE OR SEARCH THIS CLASS, SUBCLASS:

56, for reciprocating valves which continuously rotate with a speed responsive actuator.

243, for valve grinding movement of a reciprocating valve.

SEE OR SEARCH CLASS

251, Valves and Valve Actuation,

215+, for valves and their actuators in which the valves have plural diverse motions, as rotating and reciprocating.