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:
May. 05, 2015
Filed:
Aug. 08, 2011
Justin D. Piggush, LaCrosse, WI (US);
Atul Kohli, Tolland, CT (US);
Justin D. Piggush, LaCrosse, WI (US);
Atul Kohli, Tolland, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
An airfoil has a wall, a cooling channel, a trench, and a plurality of cooling holes. The wall has a leading edge, a trailing edge, a pressure side, a suction side, an outer diameter end, and an inner diameter end to define an interior. The cooling channel extends radially through the interior of the wall between the pressure side and the suction side and along the leading edge. The trench extends radially along an exterior of the wall at the leading edge and is recessed axially into the leading edge to form a back wall. The back wall is contoured to include at least one undulation. The plurality of cooling holes extends through the back wall of the trench to connect the interior of the wall at the cooling channel to the exterior.