US PATENT SUBCLASS 416 / 217
.~.~ Divided blade root

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

204 R  DF  SPECIFIC WORKING MEMBER MOUNT {9}
215  DF  .~ Blade received by continuous circumferential channel {3}
217.~.~ Divided blade root

DEFINITION

Classification: 416/217

(under subclass 215) Apparatus in which the portion of the

blade that is received by the mounting comprises a plurality of distinct fingers or projections extending from the main body of the blade.