Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Sectional – staged or nonrigid working member
Patent
1997-10-17
1999-11-30
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Articulated, resiliently mounted or self-shifting impeller...
Sectional, staged or nonrigid working member
416132A, 416223R, 416234, 416240, 416 44, B63H 128
Patent
active
059931582
ABSTRACT:
An impeller having flexible impeller blades with a stiffness which allows the blades to flex into a backward-curved impeller configuration at the maximum intended rotational speed of operation, and to return to a more radial blade configuration at lower rotational speeds, thereby enabling efficient operation at a broad range of rotational speeds.
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DBS Manufacturing, Inc.
Look Edward K.
Nguyen Ninh
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