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:
Apr. 25, 1995
Filed:
Dec. 22, 1992
Candido J Arroyo, Lithonia, GA (US);
AT&T Corp., Murray Hill, NJ (US);
Abstract
The foregoing problems of the prior art have been overcome by cables of this invention. An optical fiber cable includes a core comprising at least one optical fiber transmission medium, a tubular member in which is disposed the core and which is made of a plastic material and a sheath system which is disposed about the tubular member. Additionally, a compositional blend is disposed in the tubular member and capable of performing dual functions by blocking the longitudinal flow of water as well as preventing freezing of water or moisture within the cable. Preferably, the composition includes a superabsorbent constituent blended with an antifreeze constituent, which is then disposed along one longitudinally extending member. In addition to being sprayed onto a tape or other longitudinal member, the compositional blend may also be electronically deposited directly onto the transmission matter, sheath system or core tube.