Gas turbine having alloy castings with craze-free cooling...

Rotary kinetic fluid motors or pumps – With passage in blade – vane – shaft or rotary distributor...

Reexamination Certificate

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C415S200000, C416S24100B, C416S24100B, C416S09600A, C264S225000

Reexamination Certificate

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06860714

ABSTRACT:
An airfoil for an internal combustion engine, such as a gas turbine, formed by use of a preform. The airfoil includes: an outer surface forming the foil shape; and a plurality of craze-free cooling passages extending through the airfoil. In the preferred embodiment, a root on the airfoil joins the airfoil to the hub of a gas turbine vane assembly. Also, in the preferred embodiment, the gas turbine vane assembly is adapted to receive replaceable airfoils.

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patent: 6066279 (2000-05-01), Walls et al.
patent: 6192688 (2001-02-01), Beebe
patent: 6228299 (2001-05-01), Janney et al.
patent: 6365082 (2002-04-01), Walls et al.
patent: 6464462 (2002-10-01), Stathopoulos et al.
patent: 20010003576 (2001-06-01), Klett et al.
Optimal Composition of Zircon-Fused Silica Ceramic Cores for Casting Superalloys; Chao et al.; J. Am Ceram. Soc., 85 [4] 773-79 (2003).
Turbine Renewal: Shaping an Emerging Gas-Fired Power Source; ORNL Review vol. 33, No. 1, 2000.

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