US PATENT SUBCLASS 417 / 341
.~.~.~.~ Mechanically interconnected

Current as of: June, 1999
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417 /   HD   PUMPS

321  DF  MOTOR DRIVEN {32}
338  DF  .~ Relatively movable pumping members driven by relatively movable working members {1}
339  DF  .~.~ Nonrotary pumping and fluid motor working members {5}
340  DF  .~.~.~ Common expansible chamber for oppositely movable working members {1}
341.~.~.~.~ Mechanically interconnected

DEFINITION

Classification: 417/341

(under subclass 340) Apparatus in which there is provided mechanical motion constraining means (e.g., linkage, gearing, etc.) for interconnecting the working members of said common expansible chamber in a manner which necessitates motion of one working member relative to another.