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. 20, 2007
Filed:
Jan. 31, 2005
Michael R. Lawson, Derby, GB;
Sivasubramaniam K. Sathianathan, Burton on Trent, GB;
Michael R. Lawson, Derby, GB;
Sivasubramaniam K. Sathianathan, Burton on Trent, GB;
Rolls-Royce PLC, London, GB;
Abstract
A gas turbine engine rotor blade containment assembly () comprises a generally cylindrical, or frustoconical, metal casing (). The metal casing () has at least one arched portion () and each arched portion () extends circumferentially around the metal casing (). Each arched portion () comprises a radially inwardly extending arch () in which the trough () of the arch () is radially inwardly of a straight line () interconnecting the axial ends () of the arch (). The trough () of the arch () is radially inwardly of the at least one of the axial ends () of the at least one arch (). The arched portions () introduce compressive stresses into the metal casing () during a fan bladeimpact and enable the metal casing () to withstand the impact. The fan blade containment assembly () is lighter for large diameter turbofan gas turbine engine ().