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.