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:
Mar. 02, 1982
Filed:
Jul. 30, 1980
John F Wolfinger, Schenectady, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
An improvement in torsional vibration monitors wherein a frequency shift is applied to the torsional vibration signal to achieve improved stability and increased confidence in the measurement. The torsional vibration signal is applied to parallel frequency shifters to produce a lower frequency measuring signal and a lower frequency reference signal. The two lower frequency signals are applied to parallel connected filters to obtain spectral content of the signals. Once the spectral content is obtained, each lower frequency measuring signal and each lower frequency reference signal is shifted back to the original frequency range to produce filtered reference signals and filtered measuring signals. These signals are then correspondingly summed to provide a set of torsional vibration signals segregated with respect to the frequency spectrum and meaningful with respect to a time base.