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. 07, 2009
Filed:
May. 18, 2006
René Bachofner, Untersiggenthal, CH;
Pietro Grigioni, Ehrendingen, CH;
Wolfgang Kappis, Fislisbach, CH;
René Bachofner, Untersiggenthal, CH;
Pietro Grigioni, Ehrendingen, CH;
Wolfgang Kappis, Fislisbach, CH;
ALSTOM Technology Ltd., Baden, CH;
Abstract
A rotor () for a compressor, in particular in a gas turbine, has a number of rotor blades () which are arranged around the rotation axis of the rotor () in the form of a rim and are each held in a circumferential recess () on the rotor () by a blade root (), with the blade root () having a widening lower part () which engages behind two shoulders () that are formed on the side walls of the recess (). In such a rotor, the life is lengthened in that the recess depth (T) of the recess () is substantially greater than a minimum recess depth (T) which results in the rotor () having sufficient strength in the area of the blade attachment for starting, based on the predetermined material characteristics of the rotor () and the operating conditions of the compressor.