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:
Dec. 14, 1999
Filed:
Mar. 12, 1998
Yusuhiro Naka, Tokyo, JP;
Shimpei Todo, Tokyo, JP;
The Furukawa Electric Co., Ltd., Tokyo, JP;
Abstract
A method of measuring the tension of drawing an optical fiber by means of the oscillation waveform of the optical fiber being drawn according to the invention can accurately, reliably and easily detect a peak frequency in the frequency spectrum of an oscillation waveform without being affected by noise. With the method of measuring the tension of an optical fiber being drawn by determining the fundamental oscillation frequency of the optical fiber from a peak in the spectrum of the linear oscillation waveform of the optical fiber, the detection of a peak frequency in the frequency spectrum of a linear oscillation waveform comprises steps of conducting an initial detecting operation over a frequency range expected to contain a peak frequency and conducting subsequent detecting operations over respective frequency ranges obtained by sequentially aligning the median frequency with the peak frequency detected in the immediately preceding detecting operation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile