US PATENT SUBCLASS 416 / 218
.~.~ Having circumferentially extending binder

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}
218.~.~ Having circumferentially extending binder

DEFINITION

Classification: 416/218

(under subclass 215) Apparatus comprising a distinct and separate circumferentially extending member which secures or fastens a plurality of blades to each other or to the channel wall.

(1) Note. The circumferentially extending member may be of rod or sheet configuration (e.g., wire, wedge, or packing or sealing means).