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:
Apr. 05, 2005
Filed:
Jan. 30, 2003
Applicants:
John Slinger, Derby, GB;
David W Barrett, Derby, GB;
Christopher M Robson, Baden, CH;
Inventors:
Assignee:
Rolls-Royce plc, London, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D005/18 ;
U.S. Cl.
CPC ...
Abstract
A gas turbine engine turbine blade () has cooling air holes () arranged in groups, the holes () in one group and which span that part of the leading edge () that spans the hottest part of the blade (), are more closely spaced than the remainder of the holes (), thereby ensuring the provision of the most cooling air, where it is most needed.