US PATENT SUBCLASS 416 / 8
.~ Feathering blades

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

7  DF  WORKING MEMBER SUPPORTED ON ENDLESS FLEXIBLE CARRIER {1}
8.~ Feathering blades

DEFINITION

Classification: 416/8

(under subclass 7) Apparatus in which at least one working member is movable during operation to a different or inoperative position relative to support connection with the endless flexible member without intervention of a human operator.