US PATENT SUBCLASS 91 / 460
.~ Pulsator actuator for valve (280)

Current as of: June, 1999
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91 /   HD   MOTORS: EXPANSIBLE CHAMBER TYPE

418  DF  WITH MOTIVE FLUID VALVE {32}
460.~ Pulsator actuator for valve (280)

DEFINITION

Classification: 91/460

(under subclass 418) Apparatus in which the valve means is operated by a substantially constant mass of fluid forming a fluid link between a valve actuating surface and an actuated surface.

SEE OR SEARCH THIS CLASS, SUBCLASS:

280, for cyclically operable expansible chamber motors having a pulsator actuated distributor. NOTE "PLACEMENT OF PATENTS" IN THE CLASS DEFINITION AND THE PARAGRAPH FOLLOWING THE TITLE IN THE SCHEDULE OF THIS CLASS.