US PATENT SUBCLASS 91 / 209
.~.~.~ Fluid to exterior face controlled by cylinder position

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

196  DF  MOVING CYLINDER {4}
206  DF  .~ With integral exterior working face {1}
207  DF  .~.~ Both faces urged in single direction {2}
209.~.~.~ Fluid to exterior face controlled by cylinder position

DEFINITION

Classification: 91/209

(under subclass 207) Apparatus comprising means for applying

motive fluid to the first working face, and means responsive to the cylinder attaining a given position to cause motive fluid to be applied to the second working face.