US PATENT SUBCLASS 416 / 240
.~ Flexible


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

223 R  DF  SPECIFIC BLADE STRUCTURE (E.G., SHAPE, MATERIAL, ETC.) {18}
240.~ Flexible


DEFINITION

Classification: 416/240

(under subclass 223) Apparatus wherein the impeller blade comprises pliant material so that in its finished form it has a high degree of flexibility.

SEE OR SEARCH THIS CLASS, SUBCLASS:

81, for an oscillatory working member comprised of pliant material.

84, for a working member having collapsible walls expansible to an operative shape by filling with a fluent material.