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:
Mar. 04, 2014
Filed:
Dec. 14, 2010
Applicants:
Ian J. Andrews, Willington, GB;
David Rugg, Etwall, GB;
Michael J. Wallis, Barrow, GB;
Inventors:
Assignee:
Rolls-Royce PLC, London, GB;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D 53/78 (2006.01);
U.S. Cl.
CPC ...
Abstract
A ducted fan gas turbine engine aerofoil is made by electron beam welding together at least two metal sheets () and () and electron beam welding that sub assembly via an end to a root that has been manufactured in a separate operation, and then heating the whole to a temperature that will convert the electron beam welds to diffusion bonds.