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. 19, 1982
Filed:
Mar. 07, 1979
Maurice Arnaud, deceased, late of Paris, FR;
by Marie Avril nee Arnaud, heir, Quebec, CA;
by Michel Arnaud, heir, Saint-Pardoux, FR;
Bernard Chiron, Paris, FR;
Claude Gallachi, Paris, FR;
Jean-Pierre Hulin, Paris, FR;
Michel de Vecchis, Paris, FR;
Societe Lignes Telegraphiques et Telephoniques, Paris, FR;
Abstract
A transmission cable using optical fibre for conveying the information consists of fibres loosely laid in helical grooves of a core so that the fibre will undulate within the groove due to over-length given by pretwisting of the fibre and curvature of the groove flanks. Reduction of the contact surface between the fibre and the core improves the electrical characteristics and reduces the sensitivity of the cable to mechanical stress.