US PATENT SUBCLASS 416 / 10
.~ Offset relative to flow direction

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

9  DF  WITH MEANS POSITIONING FLUID CURRENT DRIVEN IMPELLER RELATIVE TO FLOW DIRECTION {2}
10.~ Offset relative to flow direction {3}
11  DF  .~.~> Upstream pivotal mounting
12  DF  .~.~> Responsive to folding or feathering of flow-aligned vane
13  DF  .~.~> Horizontal deflection relative to flow-aligned vane {3}

DEFINITION

Classification: 416/10

(under subclass 9) Apparatus comprising means to cause or permit deflection of the impeller from a normal operative position aligned with the direction of working fluid flow to a position wherein the impeller is oriented at an angle to the direction of flow.