Flame-resistant optical cable

US6236791A · kind A · utility

Assignee

• ALCATEL · FR

Inventors

• Peter Lausch · Krefeld, DE
• Alexander Weiss · Oakland, US
• Klaus Nothofer · Erkrath, DE

Key dates

• Filing date: Mar 17, 1999
• Grant date: May 22, 2001
• Expiry date: Mar 17, 2019

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/4436
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical cable with one or more fiber optics conductors (4) that are located in a strand (1) with a polypropylene envelope or in a polypropylene support element (8), as well as with an outer jacket (6). The polypropylene contains a fire-retardant additive, the basis of which is an ammonium polyphosphate, and the jacket (6) is made of a halogen-free, flame-resistant material.