US PATENT SUBCLASS 91 / 402
.~.~ Working member overrides exhaust port (357)

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

392  DF  WORKING MEMBER POSITION RESPONSIVE MOTIVE FLUID CONTROL {9}
400  DF  .~ Venting expanding chamber {2}
402.~.~ Working member overrides exhaust port (357)

DEFINITION

Classification: 91/402

(under subclass 400) Apparatus in which the working member travels past an exhaust port to permit the motive fluid in the expanding chamber to exhaust therethrough.

SEE OR SEARCH THIS CLASS, SUBCLASS:

325, for cyclically operable expansible chamber motors in which the working member overruns a port to allow the expanding working chamber to exhaust.

357, for expansible chamber motors in which the working member overruns an exhaust port to vent the expanding chamber, the exhaust port being selectively positionable in the direction of working member travel or having means to selectively open and close same. NOTE "PLACEMENT OF PATENTS" IN THE CLASS DEFINITION AND THE PARAGRAPH FOLLOWING THE TITLE IN THE SCHEDULE OF THIS CLASS.