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:
Aug. 22, 2006
Filed:
Feb. 11, 2004
Thomas Kramer, Ennetbaden, CH;
Andreas Kuenzler, Baden, CH;
Mohamed Yousef Nazmy, Fislisbach, CH;
Markus Staubli, Dottikon, CH;
Thomas Kramer, Ennetbaden, CH;
Andreas Kuenzler, Baden, CH;
Mohamed Yousef Nazmy, Fislisbach, CH;
Markus Staubli, Dottikon, CH;
ALSTOM Technology Ltd., Baden, CH;
Abstract
The invention relates to a hybrid blade () for thermal turbomachines, having an airfoil () made of a metallic material of a certain density, and having a blade root (). It is characterized in that the blade root (), compared with the airfoil (), is made of a different metallic material having a lower density, and in that the airfoil () is connected to the blade root () in a positive-locking manner. The blade in this case is advantageously a compressor blade, in particular a high-pressure compressor blade, in which the airfoil () is made of a stainless CrNi steel and the blade root () is made of a high-temperature titanium alloy or an intermetallic gamma titanium aluminide alloy or an intermetallic orthorhombic titanium aluminide alloy.