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:
Sep. 18, 2012
Filed:
Jun. 19, 2009
Daniel Robertson, Derby, GB;
Daniel Robertson, Derby, GB;
Rolls-Royce PLC, London, GB;
Abstract
A method is disclosed for assembling a multi-stage compressor or a multi-stage turbine for use in a gas-turbine engine. The method comprises the steps of assembling a rotor drum so as to comprise a plurality of rotor discs, and then releasably connecting a plurality of static componentsto the assembled rotor drum, thus forming an intermediate structure. The intermediate structure is then inserted within an outer casing, preferably by lowering the outer casingover the intermediate structure, whereafter the static componentsare fixed to the outer casing. The static componentsare then released from their connection to the rotor drumin order to permit rotation of the drumrelative to the static componentsand the outer casing