Method of making complex twisted blades with hollow airfoil...

Rotary kinetic fluid motors or pumps – With means for controlling casing or flow guiding means in... – Natural fluid current force responsive

Reexamination Certificate

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Details

C415S907000, C416S13200B, C029S889210

Reexamination Certificate

active

10715963

ABSTRACT:
A reactive turbine, each blade of which approximates a helical shape that is constructed with readily available conventional manufacturing techniques. The blades are constructed in discrete straight sections that, when joined, approximate a helix or any other efficient turbine shape. Each section is manufactured with the well known and readily available machine shop techniques of shaping, forming, and joining with welds or fasteners.

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patent: 2106928 (1938-02-01), Lee
patent: 3588273 (1971-06-01), Kizilos
patent: 4236866 (1980-12-01), Zapata Martinez
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patent: 4718821 (1988-01-01), Clancy
patent: 5263846 (1993-11-01), Smith
patent: 5405246 (1995-04-01), Goldberg
patent: 5451137 (1995-09-01), Gorlov
patent: 5570859 (1996-11-01), Quandt
patent: 6766623 (2004-07-01), Kalnay

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