US PATENT SUBCLASS 415 / 74
.~.~ With additional impingement means in fluid flow path

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

71  DF  RUNNER HAS SPIRALLY ARRANGED BLADE OR FLUID PASSAGE {1}
72  DF  .~ Extending along runner axis (i.e., axial flow) {3}
74.~.~ With additional impingement means in fluid flow path

DEFINITION

Classification: 415/74

(under subclass 72) Apparatus comprising a surface, in addition to the coiled blade* or conduit, for impingement of the working fluid* thereon.

(1) Note. The surface may be an integral part of the blade* or may be fixed to the casing*.