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:
Jan. 05, 2021
Filed:
Jan. 11, 2018
Corning Incorporated, Corning, NY (US);
Sumitava De, Painted Post, NY (US);
Robert Clark Moore, Wilmington, NC (US);
Douglas Gregg Neilson, Wilmington, NC (US);
Pushkar Tandon, Painted Post, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
An optical fiber coating apparatus that provides increased gyre stability and reduced gyre strength, thereby providing a more reliable coating application process during fiber drawing includes a cone-only coating die having a conical entrance portion with a tapered wall angled at a half angle α, wherein 2°≤α≤25°, and a cone height Lless than 2.2 mm, and a cylindrical portion having an inner diameter of d, wherein 0.1 mm≤d≤0.5 mm and a cylindrical height of L, wherein 0.05 mm≤L≤1.25 mm; a guide die having an optical fiber exit, the guide die disposed adjacent the cone-only coating die such that a wetted length (L) between the optical fiber exit of the guide die and the entrance of the cone-only coating die is from 1 mm to 5 mm; and a holder for holding the cone-only coating die and the guide die in a fixed relationship defining a coating chamber between the guide die and the cone-only coating die, the coating chamber having an inner radius Lfrom the optical fiber axis to an inner wall of the holder that is from 3 mm to 10 mm.