US PATENT SUBCLASS 417 / 519
.~.~.~ Element moves about axis


Current as of: June, 1999
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417 /   HD   PUMPS

437  DF  EXPANSIBLE CHAMBER TYPE {40}
510  DF  .~ Mechanically actuated distributor {5}
518  DF  .~.~ Common element forms inlet and discharge distributor {1}
519.~.~.~ Element moves about axis


DEFINITION

Classification: 417/519

(under subclass 518) Apparatus in which the element partakes of a movement about an axis to effect control of the pump fluid.