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:
Sep. 06, 2011
Filed:
Mar. 27, 2009
Klaus Werner Sommerlatte, Guilderland, NY (US);
Siddharth Navinchandra Ashar, Guilderland, NY (US);
Alexander Gabriel Beckford, Glenville, NY (US);
Eric Steven Buskirk, Guilderland, NY (US);
Benjamin Alber Mancuso, Schenectady, NY (US);
Anthony Rigosu, Altamont, NY (US);
Klaus Werner Sommerlatte, Guilderland, NY (US);
Siddharth Navinchandra Ashar, Guilderland, NY (US);
Alexander Gabriel Beckford, Glenville, NY (US);
Eric Steven Buskirk, Guilderland, NY (US);
Benjamin Alber Mancuso, Schenectady, NY (US);
Anthony Rigosu, Altamont, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A solution is provided for tuning the frequency of a torsional mode of interest of a rotating body (such as a generator rotor torsional mode) by adding a detuner to act as an undamped torsional vibration absorber. The detuner may be coupled to an overhung shaft extending from the rotating body. The detuner may be modular, therefore weight can be added or subtracted easily from the detuner in order to adjust the stiffness and/or inertia of the overhung shaft. This change in stiffness and/or inertia yields a torsional frequency of oscillation in the overhung shaft substantially similar to the natural frequency of the torsional mode of interest of the rotating body, therefore forcing the frequency of the torsional mode of interest of the rotating body above or below its torsional natural frequency.