Rotary kinetic fluid motors or pumps – Including destructible – fusible – or deformable non-reusable...
Reexamination Certificate
2005-02-28
2011-11-22
Look, Edward (Department: 3745)
Rotary kinetic fluid motors or pumps
Including destructible, fusible, or deformable non-reusable...
C415S173400, C415S174400
Reexamination Certificate
active
08061965
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.
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Serope Kalpakjian and Steven R. Schmid, Manufacturing Processes for Engineering Materials, 2003, Prentice Hall, 4th Edition, pp. 689, 730.
Daeubler Manfred A.
Hain Ulrike
Humhauser Werner
Mendritzki, legal representative Renate
Mueller-Wittek, legal representative Horst
Davidson Davidson & Kappel LLC
Eastman Aaron R
Look Edward
MTU Aero Engines GmbH
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