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.