US Patent 7618676 Fibre coating method and apparatus

Patent 7618676 was granted and assigned to British Telecommunications Public Limited Company on November, 2009 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

British Telecommunications Public Limited Company

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7618676

Date of Patent

November 17, 2009

Patent Application Number

10513883

Date Filed

May 9, 2003

Patent Primary Examiner

‌

Frederick J Parker

Patent abstract

A fiber unit coating apparatus includes a chamber into which an uncured resin coated fiber unit is passed. Microspheres mixed with air are fed into the chamber via ducts and apertures. As a result rapid and even application of the microspheres can be achieved, and the system allows controllable application of the microspheres by varying the rate of flow of the air/microsphere mixture. Positive pressure chambers are provided to prevent the microspheres from blocking the inlet and outlet points where the fiber unit enters and leaves the chamber.