US PATENT SUBCLASS 91 / 404
.~ Exhaust control

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

392  DF  WORKING MEMBER POSITION RESPONSIVE MOTIVE FLUID CONTROL {9}
404.~ Exhaust control {2}
405  DF  .~.~> Throttling (e.g., cushioning) {2}
409  DF  .~.~> Working member covers exhaust port in contracting chamber (408)

DEFINITION

Classification: 91/404

(under subclass 392) Apparatus comprising control of the motive fluid as it leaves the working chamber of the motor in response to working member position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

394+, for expansible chamber motors in which the working member carries a part within the working chamber which, in response to working member position, cooperates with a port in the working chamber end wall to control exhaust flow therethrough.

397, for expansible chamber motors in which the inlet and exhaust of motive fluid to a single working chamber are alternately controlled in response to the working member

reaching the end of its stroke in opposite directions.

398, for expansible chamber motors in which both the inlet and exhaust of motive fluid for a single working chamber are controlled simultaneously in response to working member position.