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:
Feb. 27, 1996
Filed:
Dec. 06, 1993
Eric Barat, Paris, FR;
Andre Salles, Plaisir, FR;
Commissariat a l'Energie Atomique, Paris, FR;
Abstract
Method and its devices for the contactless measurement of the tension and/or travel speed of an insulating filament, thread or wire. The method consists of processing the signal ##EQU1## in which C1 and C2 are the capacitances of a capacitive dipole. For the filament tension measuring device, the dipole (3) is defined by a pair of electrodes (4a/4b) of the same size and having a triangular shape and by a common electrode (2), processing consisting of extracting the vibration frequency of the filament between two supports by a spectral analysis. The speed measuring device comprises two dipoles (13,17), each defined by a pair of rectangular electrodes (14a/14b, 18a/18b) and a common electrode (12,16), processing consisting of extracting the passage time, between the two dipoles, of microscopic irregularities of the filament by an intercorrelation. The invention has application to the textiles field and particularly to the spinning of textile filaments.