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. 09, 2003
Filed:
Mar. 26, 2002
Applicant:
Inventors:
Assignee:
Alcatel, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F27B 7/33 ;
U.S. Cl.
CPC ...
F27B 7/33 ;
Abstract
An apparatus for drawing a fiber ( ), particularly an optical glass fiber, from a heated preform ( ), has a tubular heating element ( ), which encloses preform ( ) at least partly in its longitudinal direction, and an induction coil ( ) surrounding tubular heating element ( ) at a radial distance. Along an inside surface ( ) of the tubular heating element ( ) a protective tube ( ) is provided, which surrounds fiber ( ) and preform ( ) at a radial distance. Protective tube ( ) reliably prevents burning off of the heating element and thus a deterioration of the properties of the fiber ( ).