US PATENT SUBCLASS 417 / 65
ONE FLUID PUMPED BY CONTACT OR ENTRAINMENT WITH ANOTHER

Current as of: June, 1999
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417 /   HD   PUMPS

65ONE FLUID PUMPED BY CONTACT OR ENTRAINMENT WITH ANOTHER {10}
66  DF  .~> Contact or entrainment within rotary impeller {4}
73  DF  .~> By ignition of motive fluid {2}
76  DF  .~> Jet pump with motive fluid generating pump {4}
85  DF  .~> Diverse pumps {3}
92  DF  .~> Liquid piston {6}
105  DF  .~> By condensation of motive fluid {2}
108  DF  .~> Aerated column {1}
118  DF  .~> Liquid pumped by supplying or exhausting gaseous motive fluid to or from pumping chamber {7}
150  DF  .~> Gravity flow motive fluid
151  DF  .~> Jet {23}

DEFINITION

Classification: 417/65

(under the class definition) Apparatus in which one fluid is pumped or motivated by direct contact or entrainment with another fluid, the motive fluid before contact or entrainment being separate from the pump fluid.

(1) Note. This definition does not include mere pulsation dampeners or accumulators, i.e., a trapped, confined compressible fluid which directly receives energy from another fluid and returns the energy to the other fluid from which it was received.

SEE OR SEARCH THIS CLASS, SUBCLASS:

64, for gas pressure exchange devices using a rotary cellular member to transfer a gas to be pumped to a position where its pressure may be increased by being contacted directly by a gaseous motive fluid.