US PATENT SUBCLASS 91 / 407-- .~.~.~ By successively controlling or controlling less than all of plural exhaust passages

US PATENT SUBCLASS 91 / 407
.~.~.~ By successively controlling or controlling less than all of plural exhaust passages

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	DF	.~ Exhaust control {2}
405	DF	.~.~ Throttling (e.g., cushioning) {2}
407		.~.~.~ By successively controlling or controlling less than all of plural exhaust passages {1}
408	DF	.~.~.~.~> Working member covers exhaust port (409)

DEFINITION

Classification: 91/407

(under subclass 405) Apparatus in which there is provided a plurality of exhaust flow paths from the working chamber and (1) said flow paths being closed in series in response to movement of the motor working member, or (2) at least one of said exhaust flow paths is not controlled in response to working member position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

24+, for expansible chamber motors in which inlet motive fluid is supplied to an expanding chamber through one supply path and in response to working member position an additional supply path is opened. Ordinarily in this type motor the supply paths are also exhaust paths when the chamber is contracting and one exhaust path is cut off in response to working member position while another remains open.

236+, for cyclically operable expansible chamber motors having multiple exhaust passages, one of which exhausts or continues to exhaust after another has been cut off.