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:
Feb. 28, 2012
Filed:
Apr. 29, 2008
Kenneth F. Udall, Derby, GB;
Jeffrey Allen, Derby, GB;
Mark W. Turner, Colne, GB;
James M. Townsend, Hartington, GB;
Kenneth F. Udall, Derby, GB;
Jeffrey Allen, Derby, GB;
Mark W. Turner, Colne, GB;
James M. Townsend, Hartington, GB;
Rolls-Royce PLC, London, GB;
Abstract
A hollow aerofoil () comprises an aerofoil portion () having a leading edge (), a trailing edge (), a concave pressure surface wall () extending from the leading edge () to the trailing edge () and a convex suction surface () extending from the leading edge () to the trailing edge (). The concave pressure surface wall () and the convex suction surface wall () are integral and define a cavity (). A plurality of webs () extend across the cavity () between the concave pressure surface wall () and the convex suction surface wall (). At least one of the webs (A) extends substantially perpendicularly to the concave pressure surface wall () and the convex suction surface wall () and at least one of the webs (B) extends substantially diagonally to the concave pressure surface wall () and the convex suction surface wall ().