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:
Nov. 22, 2011
Filed:
Feb. 28, 2005
Manfred A. Daeubler, Dachau, DE;
Horst Mueller-wittek, Legal Representative, Gelsenkirchen, DE;
Renate Mendritzki, Legal Representative, Gelsenkirchen, DE;
Ulrike Hain, Munich, DE;
Werner Humhauser, Moosburg, DE;
Manfred A. Daeubler, Dachau, DE;
Horst Mueller-Wittek, legal representative, Gelsenkirchen, DE;
Renate Mendritzki, legal representative, Gelsenkirchen, DE;
Ulrike Hain, Munich, DE;
Werner Humhauser, Moosburg, DE;
MTU Aero Engines GmbH, Munich, DE;
Abstract
A ring structure with a metal design for a moving blade of axially flowed through compressor and turbine stages, particularly in gas turbine engines is provided. The ring structure includes a circular ring-shaped outer wall, a circular ring-shaped inner wall, which is located at a short radial distance from the moving blade tips, and includes a joining structure provided in the form of hollow chamber structure between the outer wall and the inner wall. The outer wall is provided in the form of a closed, mechanically stable housing wall of the compressor or turbine stage, and the joining structure provided in the form of hollow chamber structure is joined in a fixed manner to the outer wall and to the inner wall, for example, by soldering, diffusion welding or other joining techniques. The inner wall is provided in the form of a closed, mechanically stable structure, which serves as a run-in lining for the moving blade tips and which is made of a metal woven fabric and/or of a metal felt.