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:
Dec. 30, 2003
Filed:
Dec. 18, 2001
Jennifer M Norris, Derby, GB;
David S Knott, Loughborough, GB;
Adrian M Jones, Bristol, GB;
David R Midgelow, Nottingham, GB;
Robert M Hall, Dorchester, GB;
Rolls-Royce plc, London, GB;
Abstract
A gas turbine engine fan blade ( ) comprises a root portion ( ) and an aerofoil portion ( ). The aerofoil portion ( ) has a leading edge ( ), a trailing edge ( ), a concave metal wall portion ( ) extending from the leading edge ( ) to the trailing edge ( ) and a convex metal wall portion ( ) extending from the leading edge ( ) to the trailing edge ( ). The aerofoil portion ( ) has a hollow interior ( ) and the interior ( ) of the aerofoil portion ( ) is at least partially filled with a vibration damping material ( ). The vibration damping material ( ) comprises a material having viscoelasticity for example one formed by mixing an amine terminated polymer and bisphenol a-epichlorohydrin epoxy resin.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile