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.:
Date of Patent:
Jul. 19, 2011
Filed:
Aug. 27, 2007
Scott W. Gayman, Manchester, CT (US);
Justin D. Piggush, Hartford, CT (US);
Edward F. Pietraszkiewicz, Southington, CT (US);
William A. Agli, Iii, Meriden, CT (US);
Scott W. Gayman, Manchester, CT (US);
Justin D. Piggush, Hartford, CT (US);
Edward F. Pietraszkiewicz, Southington, CT (US);
William A. Agli, III, Meriden, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A blade is provided for a turbine engine that includes an exterior surface. The exterior surface includes a portion having a thermal barrier coating and an uncoated shelf adjacent to the thermal barrier coating without the thermal barrier coating. A cooling hole extends from an internal passageway through the exterior surface to an exit. A scarfed channel is recessed in the exterior surface and interconnected to the cooling hole at the exit. The scarfed channel extends to a blade tip end surface. The scarfed channel protects the cooling fluid exiting the cooling hole from secondary flows surrounding the blade that would otherwise mix with and disperse the cooling fluid. The scarfed channels also increase the surface area exposed to the cooling fluid to increase the heat transfer rate.