Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Reexamination Certificate
2007-08-21
2007-08-21
Edgar, Richard A. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
C416S224000, C416S233000
Reexamination Certificate
active
11000957
ABSTRACT:
An internally-cooled airfoil for a gas turbine engine, wherein the airfoil comprises at least one substantially chordwise-extending and internally-projecting stiffener located on an internal surface of one of the sidewalls and adjacent to the insert.
REFERENCES:
patent: 3373970 (1968-03-01), Heinz
patent: 3574481 (1971-04-01), Pyne et al.
patent: 3628880 (1971-12-01), Smuland et al.
Djeridane Toufik
Papple Michael Leslie Clyde
Sreekanth Sri
Trindade Ricardo
Edgar Richard A.
Pratt & Whitney Canada Corp.
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