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. 29, 2013
Filed:
Dec. 20, 2002
Applicants:
Carlo Cognolato, Milan, IT;
Francesco Mole′, Monza, IT;
Andrea Demergazzi, Milan, IT;
Franco Veronelli, Lainate, IT;
Inventors:
Carlo Cognolato, Milan, IT;
Francesco Mole′, Monza, IT;
Andrea Demergazzi, Milan, IT;
Franco Veronelli, Lainate, IT;
Assignee:
Prysmian Cavi e Sistemi Energia S.r.l., Milan, IT;
Primary Examiner:
Int. Cl.
CPC ...
C03B 37/018 (2006.01);
U.S. Cl.
CPC ...
Abstract
A burner for a vapour deposition process has a central nozzle for ejecting a glass precursor material, at least a crown of nozzles surrounding said central nozzle for ejecting a flame reactant, and a circular nozzle between said central nozzle and said crown of nozzles for ejecting an innershield gas, wherein the central nozzle has a concave shape in a cross section in the axial plane and, preferably, a symmetry about an axial plane.