US PATENT SUBCLASS 91 / 157
.~ Relative valving adjustment between high and low pressure working chambers

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

152  DF  MULTIPLE EXPANSION {7}
157.~ Relative valving adjustment between high and low pressure working chambers {1}
158  DF  .~.~> Adjustment for valving for plural chambers

DEFINITION

Classification: 91/157

(under subclass 152) Apparatus in which each of the working chambers is provided with valve means for distributing motive fluid thereto, and including means for selectively moving at least one of the valve means relative to the other, the movement being in addition to the normal fluid distributing

movement.