US PATENT SUBCLASS 91 / 409
.~.~ Working member covers exhaust port in contracting chamber (408)

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}
404  DF  .~ Exhaust control {2}
409.~.~ Working member covers exhaust port in contracting chamber (408)

DEFINITION

Classification: 91/409

(under subclass 404) Apparatus in which the expansible chamber exhausts through a port which is so located as to be covered by the working member during contraction of the expansible chamber to prevent further exhaust therethrough.

SEE OR SEARCH THIS CLASS, SUBCLASS:

408, for expansible chamber motors in which the working member covers an exhaust port in a contracting working chamber, there being additional exhaust means which remain open after the working member covers said port. NOTE "PLACEMENT OF PATENTS" IN THE CLASS DEFINITION AND THE PARAGRAPH FOLLOWING THE TITLE IN THE SCHEDULE OF THIS CLASS.