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:
Oct. 31, 2000
Filed:
Mar. 30, 1987
Applicant:
Inventors:
William F Lang, III, Chula Vista, CA (US);
Thomas Alvin Auxier, Lake Park, FL (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D / ;
U.S. Cl.
CPC ...
415116 ; 415115 ;
Abstract
A gas turbine engine airfoil leading edge includes depressions therein longitudinally spaced apart and centered on stagnation points. The depressions stay filled with relatively stationary air during engine operation and reduce the heat load at the leading edge, which is primarily cooled by an internal supply of cooling fluid.