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. 30, 2014
Filed:
Mar. 22, 2011
Stephen C. Diamond, Derby, GB;
Caner H. Helvaci, Derby, GB;
Roderick M. Townes, Derby, GB;
Ian Tibbott, Litchfield, GB;
Dougal R. Jackson, Stanton-By-Bridge, GB;
Stephen C. Diamond, Derby, GB;
Caner H. Helvaci, Derby, GB;
Roderick M. Townes, Derby, GB;
Ian Tibbott, Litchfield, GB;
Dougal R. Jackson, Stanton-By-Bridge, GB;
Rolls-Royce PLC, London, GB;
Abstract
A turbine blade for a gas turbine engine has an aerofoil portion extending from a root to a tip. The tip carries winglets. A gutter extends across the tip to entrain gas leaking around the tip (over tip leakage). The aerofoil portion has a mean camber line and the gutter has a center line. In the examples described, the conditions that (a) the mean camber line and the centre line coincide at the exit when viewed from the tip towards the root, and (b) the mean camber line and the center line are parallel at the exit when viewed as aforesaid, are not both fulfilled.