Metal working – Method of mechanical manufacture – Impeller making
Reexamination Certificate
2005-09-28
2009-06-02
Bryant, David P. (Department: 3726)
Metal working
Method of mechanical manufacture
Impeller making
C029S889700, C029S889721, C029S889722, C416S09600A, C416S09700R
Reexamination Certificate
active
07540083
ABSTRACT:
Methods are provided for modifying an airfoil internal cooling circuit that include a flow path configured to direct air through the airfoil in a direction and the airfoil having a leading edge, a trailing edge, and a first and a second wall therebetween, each wall having an inner and an outer surface, the inner surfaces defining a cavity and having features forming at least a portion of the internal cooling circuit. The methods may include the steps of forming a pilot hole through the airfoil first and second walls at a predetermined location, forming an insert hole based on the predetermined location, the insert hole enveloping the pilot hole and configured to receive at least a portion of an insert configured to modify the internal cooling circuit flow path, placing the insert into the insert hole, and bonding the insert to the airfoil first and second walls.
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Mayer Edward J.
Morris Mark C.
Smoke Jason C.
Weidner William J.
Wilson Craig A.
Bryant David P.
Honeywell International , Inc.
Ingrassia Fisher & Lorenz P.C.
Walters Ryan J
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