Fluid reaction surfaces (i.e. – impellers) – With fluid passage in working member communicating with... – Discharge solely at periphery normal to rotation axis
Reexamination Certificate
2007-11-06
2007-11-06
Edgar, Richard A. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
With fluid passage in working member communicating with...
Discharge solely at periphery normal to rotation axis
C416S228000, C415S173100
Reexamination Certificate
active
11162433
ABSTRACT:
An airfoil for a gas turbine engine includes a root, a tip, a leading edge, a trailing edge, and opposed pressure and suction sidewalls extending generally along a radial axis. The airfoil includes a tip cap extending between the pressure and suction sidewalls; and spaced-apart suction-side and pressure-side tip walls extending radially outward from the tip cap to define a tip cavity therebetween. The pressure-side tip wall includes a continuously concave curved arcuate portion, at least a section of which extends circumferentially outward from a radial axis of the airfoil.
REFERENCES:
patent: 5261789 (1993-11-01), Butts et al.
patent: 5282721 (1994-02-01), Kildea
patent: 6494678 (2002-12-01), Bunker
patent: 6672829 (2004-01-01), Cherry et al.
patent: 6790005 (2004-09-01), Lee et al.
Klasing Kevin Samuel
Lee Ching-Pang
Leeke Leslie Eugene
Prakash Chander
Stegemiller Mark Edward
Adams Evans P.A.
Edgar Richard A.
General Electric Company
Whitlow Janice
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