US PATENT SUBCLASS 91 / 454
.~ Relatively movable inlet and exhaust valves for single working chamber

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}
454.~ Relatively movable inlet and exhaust valves for single working chamber {3}
455  DF  .~.~> One valve forms unitary part of valve controlling opposed working chamber
456  DF  .~.~> One valve moves about an axis
457  DF  .~.~> Single actuating means moves both valves

DEFINITION

Classification: 91/454

(under subclass 418) Apparatus in which the valve means comprises two valves, each having a movable flow controlling part, one of the valves controlling the pressure line to a working chamber and the other controlling the exhaust line from the same chamber, at least one of the valves controlling its respective line by movement of its movable valve part relative to the movable valve part of the other valve.

SEE OR SEARCH THIS CLASS, SUBCLASS:

265+, and the subclasses there noted for cyclically operable expansible chamber motors having relatively movable inlet and exhaust valves.