US PATENT SUBCLASS 91 / 29
.~.~ By pressure rise in first path

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

6  DF  FLUID SUPPLY THROUGH DIVERSE PATHS TO SINGLE EXPANSIBLE CHAMBER {12}
28  DF  .~ Second path activated in response to pressure or flow in first path {1}
29.~.~ By pressure rise in first path

DEFINITION

Classification: 91/29

(under subclass 28) Apparatus in which the second inlet flow path to the working chamber is opened in response to an increase in pressure of the motive fluid in the first inlet flow path.