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. 14, 2001
Filed:
Dec. 23, 1999
Applicant:
Inventors:
Assignee:
Teijin Limited, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01L 5/04 ;
U.S. Cl.
CPC ...
G01L 5/04 ;
Abstract
A draw-false twisting management system that measures untwisting tension with an untwisting tension sensor (,) and diagnoses trouble in a draw-false twisting machine, wherein the measured values are subjected to fast Fourier transform online by fast Fourier transform means (,), the untwisting tension signal is monitored in a frequency domain, a pattern is extracted for the integral value (area value) or peak value in a specific frequency band, and a comparative judgment against a preset reference pattern is made by trouble-judging means (,), which judges that trouble has occurred in the draw-false twisting when the value falls outside of the reference value range.