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:
Jul. 07, 1992
Filed:
Jun. 26, 1991
Larry W Plemmons, Fairfield, OH (US);
William C Oakes, West Chester, OH (US);
Ralph A Kirkpatrick, Cincinnati, OH (US);
General Electric Company, Cincinnati, OH (US);
Abstract
A gas turbine engine stator and method are disclosed which are effective for controlling non-axisymmetric radial running clearance between a stator flowpath surface and rotor blade tips. A coating of preselected thermal conductivity is predeterminedly disposed along the circumference of the stator to control circumferential thermally induced distortion and thereby control non-axisymmetric radial running clearance. In preferred embodiments of the invention, a high thermal conductivity coating may be applied to an annular flange for reducing temperature gradients therein. In another embodiment of the present invention, low thermal conductivity coatings may be applied to a stator to preferentially insulate the stator for reducing circumferential thermal distortion.