US PATENT SUBCLASS 415 / 40
.~.~.~.~ Fluid motor operated valve

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


415 /   HD   ROTARY KINETIC FLUID MOTORS OR PUMPS

13  DF  WITH CONTROL MEANS RESPONSIVE TO NON-CYCLIC CONDITION SENSING, CENTRIFUGAL ACTUATION OR TORQUE {13}
30  DF  .~ By shaft speed or torque responsive means {5}
36  DF  .~.~ Of working fluid valve or vane {6}
38  DF  .~.~.~ Plural passages with sequential or reverse fluid control {2}
40.~.~.~.~ Fluid motor operated valve

DEFINITION

Classification: 415/40

(under subclass 38) Apparatus comprising a source of mechanical power caused to move by virtue of a fluid acting thereon to operate said control means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

43, for other valve actuators comprising a fluid servomotor and pilot valve therefor controlled by a speed responsive means.