US PATENT SUBCLASS 415 / 58.1
.~ Having additional blade set in re-entry path

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}
58.1.~ Having additional blade set in re-entry path

DEFINITION

Classification: 415/58.1

Having additional blade set in reentry path:

(under subclass 52.1) Device comprising a second blade* row which contacts the working fluid* after the first blade or blade row but before the (reentry) means has directed the working fluid back to the first blade or blade row.

SEE OR SEARCH THIS CLASS, SUBCLASS:

57.2, for a device having plural, independent, serially acting reentry means one of which directs the working fluid through an additional blade set after the working fluid has contacted the first blade set but prior to the working fluid being returned to the first blade set.