US PATENT SUBCLASS 91 / 159
.~ Expansion between relatively movable working members

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

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

DEFINITION

Classification: 91/159

(under subclass 152) Apparatus comprising a plurality of working members which are movable relative to one another, the fluid acting on one of the working members and then being expanded to act on another working member.