US PATENT SUBCLASS 91 / 423
.~ Valve part forms traversed movable portion of working chamber wall (276)

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

Internet Version by PATENTEC © 1999      Terms of Use


91 /   HD   MOTORS: EXPANSIBLE CHAMBER TYPE

418  DF  WITH MOTIVE FLUID VALVE {32}
423.~ Valve part forms traversed movable portion of working chamber wall (276)

DEFINITION

Classification: 91/423

(under subclass 418) Apparatus in which a part of the working chamber wall which is traversed by the working member is movable and forms or carries a part forming a portion of the motive fluid valve means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

276, for cyclically operable expansible chamber motors in which the valve means is formed by a movable portion of the working chamber wall traversed by the working member. NOTE "PLACEMENT OF PATENTS" IN THE CLASS DEFINITION AND THE PARAGRAPH FOLLOWING THE TITLE IN THE SCHEDULE OF THIS CLASS.

SEE OR SEARCH CLASS

417, Pumps,

509, for expansible chamber pumps in which the pump fluid is controlled by a valve means which is formed by a movable portion of the pump chamber wall traversed by the pumping member.