US PATENT SUBCLASS 416 / 9
WITH MEANS POSITIONING FLUID CURRENT DRIVEN IMPELLER RELATIVE TO FLOW DIRECTION


Current as of: June, 1999
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416 /   HD   FLUID REACTION SURFACES (I.E., IMPELLERS)

9WITH MEANS POSITIONING FLUID CURRENT DRIVEN IMPELLER RELATIVE TO FLOW DIRECTION {2}
10  DF  .~> Offset relative to flow direction {3}
17  DF  .~> Feathering cycle related to flow direction


DEFINITION

Classification: 416/9

(under the class definition) Apparatus comprising an impeller* which is acted upon by a flowing working fluid* to produce a mechanical output and means for orienting the impeller, relative to the direction of flow.

(1) Note. This definition does not include a mere nominal recitation of a tail vane or rudder.