Variable vane electro-graphic thrust washer

Details Variable vane electro-graphic thrust washer Variable vane electro-graphic thrust washer

2006-09-26

2006-09-26

Look, Edward K. (Department: 3745)

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Upstream of runner

C415S160000, C415S162000

Reexamination Certificate

active

07112039

ABSTRACT:
A method for improving the wear characteristics of a system for operating a variable vane comprising the steps of providing a trunnion connected to the variable vane via an vane platform and means for causing rotation of the trunnion, and positioning a thrust washer formed from a carbon material about a lower portion of the trunnion and in a space between the vane platform and an outer split case so that during operation of the system the space between the vane platform and the outer split case is maintained substantially constant and unwanted deflection of the vane is avoided.

REFERENCES:
patent: 4834613 (1989-05-01), Hansen et al.
patent: 5039277 (1991-08-01), Naudet

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