US PATENT SUBCLASS 416 / 136
.~.~ Rotary working member pivotable solely about radial axis

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

131  DF  ARTICULATED, RESILIENTLY MOUNTED OR SELF-SHIFTING IMPELLER OR WORKING MEMBER {7}
135  DF  .~ Resilient bias or mount {2}
136.~.~ Rotary working member pivotable solely about radial axis {1}
137  DF  .~.~.~> Convolute spring coaxial with impeller shaft

DEFINITION

Classification: 416/136

(under subclass 135) Apparatus comprising a working member supported for rotation and movable only about a radial axis in response to dynamic forces.

SEE OR SEARCH THIS CLASS, SUBCLASS:

89, for an impeller comprising a rotary working member pivotable about its radial axis concurrently with a radial inward or outward movement of the member whereby the effective operative diameter of the impeller is increased or decreased.