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:
Feb. 07, 1995
Filed:
Dec. 22, 1993
Yassin Bouhennicha, Corbeil, FR;
Daniel J Marey, Soisy sur Seine, FR;
Abstract
A control ring for a stage of pivotable vanes on the stator of a turbomachine carries a plurality of adjustable shoes for contacting a circular surface to set and maintain the coaxiality of the control ring during rotation thereof to pivot the vanes. The radial position of each shoe is adjusted by virtue of a double screw having two screw-threaded portions, one engaging with an internally threaded portion of a bush fixed to the control ring and the other engaging with an internally threaded portion of a shoe-holder which is mounted slidably and non-rotatably in the bush, the two screw-threaded portions having slightly different pitches so as to permit very fine adjustment of the shoe postion.