US PATENT SUBCLASS 415 / 59.1
.~ Plural blade sets

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

52.1  DF  WITH MEANS FOR RE-ENTRY OF WORKING FLUID TO BLADE SET (E.G., RE-ENTRY TYPE DEVICE, PASSAGE, ETC.) {11}
59.1.~ Plural blade sets

DEFINITION

Classification: 415/59.1

Plural blade sets:

(under subclass 52.1) Device comprising two or more blade* rows.

SEE OR SEARCH THIS CLASS, SUBCLASS:

55.5+, for a turbine regenerative pump having plural, rigidly related blade sets.

57.2, for a device having plural, independent, serially acting working fluid reentry means for a blade or blade set and an additional blade set in one of the reentry paths.

58.1, for a device having working fluid* reentry means to a blade or blade set and an additional blade set in the reentry path.