US PATENT SUBCLASS 91 / 370
.~.~ With motor chamber pressure reaction on valve

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

358 R  DF  WORKING MEMBER POSITION FEEDBACK TO MOTIVE FLUID CONTROL {12}
368  DF  .~ Follower type {9}
370.~.~ With motor chamber pressure reaction on valve {2}
371  DF  .~.~.~> With valve means limiting reaction pressure
372  DF  .~.~.~> Spring-loaded valve {1}

DEFINITION

Classification: 91/370

(under subclass 368) Apparatus in which the valve means is provided with a means responsive to fluid pressure, which means is so related to the valve means and a working chamber of the motor that it exerts a force on the valve means due to pressure existing in the motor chamber.

(1) Note. The means responsive to fluid pressure may be a surface on one of the valve parts but for classification under this definition the part must be specifically described as having the function of a fluid pressure responsive means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

369, for motors in which the motor chamber pressure reaction is transmitted to the input member by relative movement between the working member and the load output member.