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:
Oct. 23, 2007
Filed:
Dec. 12, 2003
Applicants:
Eric Lainet, Maisons Laffitte, FR;
Frédéric Hayrault, Marly la Ville, FR;
Daniel Coelho, Jouy-le-Moutier, FR;
Inventors:
Eric Lainet, Maisons Laffitte, FR;
Frédéric Hayrault, Marly la Ville, FR;
Daniel Coelho, Jouy-le-Moutier, FR;
Assignee:
Draka Comteq B.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03B 37/07 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical fiber drawing installation is equipped with an oscillating pulley that applies torsion to the fiber alternately in one rotation direction and then in the opposite direction. To control the torsion applied to the fiber, images are formed of the fiber and the pulley. The images are analyzed to determine the position of the fiber relative to the pulley. The torsion is calculated from the calculated position, on the assumption that the fiber rolls on the pulley.