US PATENT SUBCLASS 251 / 59
.~ Rotary or oscillatory motor

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

12  DF  FLUID ACTUATED OR RETARDED {12}
59.~ Rotary or oscillatory motor

DEFINITION

Classification: 251/59

(under subclass 12) Subject matter wherein the fluid pressure actuator comprises an impeller or vane mounted to turn or swing about a pivot in response to fluid flow or pressure and connected to actuate the valve.

SEE OR SEARCH CLASS

137, Fluid Handling,

332, for turbines connected to valves to give a non-valving motion and subclass 499 for turbine or swinging blade reactor

surface connected to operate a line condition change responsive valve.