US PATENT SUBCLASS 417 / 89
.~.~.~ With rotary nonexpansible chamber type

Current as of: June, 1999
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417 /   HD   PUMPS

65  DF  ONE FLUID PUMPED BY CONTACT OR ENTRAINMENT WITH ANOTHER {10}
85  DF  .~ Diverse pumps {3}
87  DF  .~.~ Including jet pump {2}
89.~.~.~ With rotary nonexpansible chamber type

DEFINITION

Classification: 417/89

(under subclass 87) Apparatus in which another of the pumps comprises a pumping member which has unidirectional rotary motion about a fixed axis and acts to pump fluid by centrifugal, centripetal or screw effect.

SEE OR SEARCH THIS CLASS, SUBCLASS:

80, for a jet pump with a rotary nonexpansible chamber-type pump which generates the motive fluid for the jet.