Ceramic-based bushing for a variable-pitch vane system in a...

Details Ceramic-based bushing for a variable-pitch vane system in a... Ceramic-based bushing for a variable-pitch vane system in a...

2005-04-04

2009-11-10

Nguyen, Ninh H (Department: 3745)

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Upstream of runner

C415S229000

Reexamination Certificate

active

07614846

ABSTRACT:
The invention relates to a ceramic-based bushing for mounting in a turbomachine casing to provide a smooth bearing for a pivot of a variable-pitch vane. The bushing is constituted by a metal jacket and a ceramic ring secured to the inside wall of said jacket by brazing. The invention also provides a turbomachine compressor having variable-pitch stator vanes with pivots mounted in the casing by means of such bushings.

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patent: 7214030 (2007-05-01), Arilla et al.
patent: 2002/0154991 (2002-10-01), Bowen
patent: 2005/0008489 (2005-01-01), Perruchaut et al.
patent: 58-163820 (1983-09-01), None
Kalpakjian, Serope and Schmid, Steven R. Manufacturing Processes for Engineering Materials 4thEd. Prentice Hall, 2003. p. 723. ISBN 0-13-040871-9.

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