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:
Jun. 25, 2013
Filed:
Oct. 29, 2008
Naoki Okada, Yotsukaido, JP;
Yoshio Hashimoto, Sakura, JP;
Masayuki Ishioka, Yachimata, JP;
Fujikura Ltd., Tokyo, JP;
Abstract
An extrusion-molding apparatus for a loose tube includes: an extrusion head that includes a tip and a die concentrically arranged therewithin and extrudes a tube between the tip and the die; a needle that feeds at least one optical fiber and filler to be filled around the optical fiber into the tube being extrusion-molded; and a cylindrical bundling member provided within the needle. The bundling member has a bundling hole being smaller than an inner diameter of the tube at a center thereof and into which the optical fiber can pass through, and a flow pass penetrating along a feeding direction of the filler between the bundling hole and an inner circumferential surface of the needle. In an extrusion molding method using the extrusion-molding apparatus, the optical fiber is passed through a bundling hole to be bundled at an almost center of the tube. In addition, filler is passed through a flow path to be filled around the optical fiber.