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. 08, 2003
Filed:
Mar. 23, 2001
Sivasubramaniam K Sathianathan, Burton on Trent, GB;
Julian M Reed, Derby, GB;
Paul Hodgson, Derby, GB;
David Geary, Derby, GB;
Ian G Martindale, Derby, GB;
Rolls-Royce plc, London, GB;
Abstract
A gas turbine engine fan blade containment assembly ( ) comprising a generally cylindrical, or frustoconical, metal casing ( ) which has an inner surface ( ), an outer surface ( ), an upstream flange ( ) and a downstream flange ( ). The outer surface ( ) of the metal casing ( ) is provided with a pattern of blind apertures ( ) which extend radially inwardly from the outer surface ( ) of the metal casing ( ) between the flanges ( ). The fan blade containment has reduced weight of the metal casing ( ) of the fan blade containment assembly ( ) for a large diameter turbofan gas turbine engine ( ) but has unimpaired stiffness and penetration resistance.