US PATENT SUBCLASS 416 / 145
.~ Self-shifting or selectively adjustable mass

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

144  DF  WITH WEIGHT-BALANCING MEANS {1}
145.~ Self-shifting or selectively adjustable mass

DEFINITION

Classification: 416/145

(under subclass 144) Apparatus in which the means comprises a mass of matter in any state and mounted so as to (1) move and assume various positions dependent on the rotation of the impeller, without the intervention of a human attendant or (2) be moved at will by a human attendant to various positions.