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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 5702288 B1

PDFFull Text
Date of Patent:
Dec. 30, 1997

Filed:

Aug. 30, 1995

Method of removing excess overlay coating from within cooling holes of

Applicant:
Inventors:

William R Liebke, Vernon, CT (US);

David R Dawson, East Hartford, CT (US);

Mark A Fredette, Windsor, CT (US);

Mark B Goodstein, Windsor Locks, CT (US);

Assignee:

United Technologies Corporation, Hartford, CT (US);

Attorney:

Brooks Haidt Haffner & Delahunty

Primary Examiner:

James G Smith

Assistant Examiner:

Dona C Edwards

Int. Cl.
CPC ...
B24B / ;
U.S. Cl.
CPC ...
451 36 ; 451 61 ; 451113 ;
Abstract

A method of removing excess MCrAlY overlay coating from within a cooling hole of an aluminide coated gas turbine engine component is disclosed. The method includes providing a gas turbine engine component having an internal surface (4), an outer surface (6) and a root end (8). The component also includes at least one cooling hole (10) extending from the internal surface (4) to the outer surface (6), wherein the internal surface(4) of the component is coated with a corrosion resistant aluminide coating. An MCrAlY overlay coating (12) is also located on the outer surface (6) and inside a portion of the cooling hole (10). An abrasive slurry is forced into the gas turbine engine component from the outside of the component to the inside of the component, through the cooling hole (10), such that the slurry flows through the internal surface (4) of the component and removes at least a portion of the overlay coating (12) located inside the cooling hole (10) without adversely affecting the internal surface (4) of the component. The abrasive slurry subsequently exits the component through the root end (8).

Find Patent Forward Citations

Liebke, William. (1997). Method of removing excess overlay coating from within cooling holes of (U.S. Patent No. 5702288). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5702288

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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