Double near-net forging of article

Details Double near-net forging of article Double near-net forging of article

2006-08-01

2006-08-01

Look, Edward K. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Radial flow devices

C029S889700, C029S889720

Reexamination Certificate

active

07083388

ABSTRACT:
A method of forming a blade comprising the steps of forging a part comprising a suction side, a pressure side, and a dividing portion of material greater than a portion of material to be sacrificed between the suction side and the pressure side, splitting the part through the dividing portion of material to form a suction side inner surface and a pressure side inner surface, and joining the suction side inner surface and the pressure side inner surface to form the blade.

REFERENCES:
patent: 3628226 (1971-12-01), Nelson
patent: 3936920 (1976-02-01), Conn, Jr.
patent: 4364160 (1982-12-01), Eiswerth et al.
patent: 4815939 (1989-03-01), Doble
patent: 5152059 (1992-10-01), Midgley
patent: 6705011 (2004-03-01), Leibfried et al.
patent: 6739049 (2004-05-01), Nicholson
European Search Report for EP Patent Appln. 05252704.1.

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