Ring structure of metal construction having a run-in lining

Rotary kinetic fluid motors or pumps – Including destructible – fusible – or deformable non-reusable...

Reexamination Certificate

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Details

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.

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