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:
Sep. 11, 2001
Filed:
Oct. 22, 1997
David M. Kercher, Ipswich, MA (US);
General Electric Company, Cincinnati, OH (US);
Abstract
A turbine airfoil includes a leading edge, a trailing edge, and a root and tip spaced apart along a span axis. First and second airfoil sides extend therebetween. A cooling circuit is disposed between the sides for channeling a cooling fluid. A plurality of diffusion fan holes are spaced apart along the span axis in the airfoil first side, with each fan hole increasing in flow area between an inlet at the cooling circuit and an outlet on the airfoil first side disposed coaxially about a centerline fan axis. The fan axis is inclined at an acute span angle, with the outlet being greater in span height than the inlet, and substantially equal in width for increasing coverage of the outlets and film cooling air therefrom along the span axis.