US PATENT SUBCLASS 91 / 161
.~.~ Fluid acts on each working member in single direction

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

152  DF  MULTIPLE EXPANSION {7}
159  DF  .~ Expansion between relatively movable working members {2}
161.~.~ Fluid acts on each working member in single direction {1}
162  DF  .~.~.~> High and low pressure faces on each working member

DEFINITION

Classification: 91/161

(under subclass 159) Apparatus wherein the working face or faces on each working member are so disposed that the motive fluid reacts with each working member in a single direction only.

(1) Note. The motive fluid does not necessarily act in the same direction on all the relatively movable working members, but acts in one direction only on each individual working member.