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:
Aug. 28, 1990
Filed:
Jul. 26, 1989
Michael Twerdochlib, Oviedo, FL (US);
Robert L Osborne, Winter Springs, FL (US);
Paul F Rozelle, Fern Park, FL (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A method of determining the untwist of turbine blades under dynamic conditions is comprised of the steps of producing a first pair of blade passing event signals in response to a blade tip's movement past a pair of fixed sensors. The signals comprising the first signal pair are compared to one another to establish a first differential value. Another data point containing blade vibrational information is produced. The first differential value and the other data point are evaluated to discriminate between blade untwist and synchronous vibration. Based on the magnitude of the blade untwist, inferences can be drawn regarding the status of the turbine blade lashing wires.