Expandable impeller pump

Details Expandable impeller pump Expandable impeller pump

2008-07-01

2008-07-01

Nguyen, Ninh H. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Working member foldable, pivotable or collapsible to non-use...

C416S189000, C416S19800R, C416S234000, C416S24100B, C416S23600R, C416S240000

Reexamination Certificate

active

11227277

ABSTRACT:
An impeller according to an example of the present invention comprises a hub, and at least one blade supported by the hub. The impeller has a deployed configuration in which the blade extends away from the hub, and a stored configuration in which the impeller is radially compressed, for example by folding the blade towards the hub. The impeller may comprise a plurality of blades, arranged in blade rows, to facilitate radial compression of the blades. The outer edge of a blade may have a winglet, and the base of the blade may have an associated indentation to facilitate folding of the blade.

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