US PATENT SUBCLASS 417 / 394
.~.~.~ Collapsible common member

Current as of: June, 1999
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417 /   HD   PUMPS

321  DF  MOTOR DRIVEN {32}
375  DF  .~ Fluid motor {9}
392  DF  .~.~ Common pumping and motor working member {2}
394.~.~.~ Collapsible common member {1}
395  DF  .~.~.~.~> Diaphragm

DEFINITION

Classification: 417/394

(under subclass 392) Apparatus in which the movable member is deformable and comprises either a wall portion formed of flexible material or rigid members hinged or interfitted together so that the members are movable relative to each other; the flexing of the material or the relative movement of the members constituting the movement which effects the work function of the expansible pump and motor chambers.