US PATENT SUBCLASS 415 / 93
AXIALLY OPPOSED WORKING FLUID PATHS TO OR FROM RUNNER (E.G., END BALANCE, ETC.)

Current as of: June, 1999
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415 /   HD   ROTARY KINETIC FLUID MOTORS OR PUMPS

93AXIALLY OPPOSED WORKING FLUID PATHS TO OR FROM RUNNER (E.G., END BALANCE, ETC.) {4}
94  DF  .~> With working fluid regulation or control means {1}
96  DF  .~> With additional shaft connected end balancing fluid force reactor surface
97  DF  .~> Pump impeller means {2}
101  DF  .~> Plural, separate, parallel, simultaneous flow paths {2}

DEFINITION

Classification: 415/93

(under the class definition) Apparatus comprising an arrangement whereby the working fluid* enters or leaves the runner* member or members in a plurality of axially directed paths, at least two of such paths being towards each other or away from each other, in order that the force of fluid acting in an axial direction on the runner* be balanced or neutralized, at least in part, by the force of fluid acting in the opposite axial direction.

SEE OR SEARCH THIS CLASS, SUBCLASS:

77+, for devices in which the working fluid* travels axially along one set of blades* attached to a peripheral wall and may then return in the opposite direction along blades* attached to the opposite side of the same peripheral wall.

SEE OR SEARCH CLASS

416, Fluid Reaction Surfaces (i.e., Impellers),

199, for a fluid reaction surface (e.g., Impeller or runner) which comprises multiple axially spaced working members or blades and a radially extending plate or deflector which causes the working fluid to enter or leave the working members in axially opposed paths.