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. 22, 2011
Filed:
Mar. 20, 2007
William Lee Herron, Springdale, OH (US);
Robert Joseph Albers, Park Hills, KY (US);
Rafael Jose Ruiz, Liberty Township, OH (US);
Samhita Dasgupta, Niskayuna, NY (US);
William Lee Herron, Springdale, OH (US);
Robert Joseph Albers, Park Hills, KY (US);
Rafael Jose Ruiz, Liberty Township, OH (US);
Samhita Dasgupta, Niskayuna, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A multi sensor clearance probe with at least longitudinally and transversely spaced apart first and second sensors operable to measure first and second distances respectively between the sensors and a longitudinally spaced apart rotating rotor. The sensors being operable to measure blade tip clearances between radially outer turbine blade tips and an annular stator shroud circumscribing the blade tips. The blade tips may be squealer tips and the sensors operable to measure the distances between the sensors and tops of squealer tip walls and outwardly facing walls within cavities of the squealer tips. The probe may be operably connected to a controller for sending signals to the controller indicating the first and second distances for controlling an air valve used for active clearance control. Two or more of the probe may be used to determine rotor centerline offset.