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:
Nov. 19, 2002
Filed:
Mar. 19, 2001
Pierre Gaillard, Calais, FR;
J. Boyet Stevens, Maineville, OH (US);
Vincent Bourget, Sur Mer, FR;
Brian G. Risch, Hickory, NC (US);
Stefan Richter, Hickory, NC (US);
Alcatel, Paris, FR;
Abstract
An optical-fiber cable includes an assembly of buffer tubes including at least two flexible buffer tubes that are held together compactly by adhesion to one another. The cable further includes a plurality of optical fibers, which are housed within the buffer tubes, a jacket surrounding the assembly of buffer tubes, and at least one longitudinal strength member that is provided at the periphery of the assembly of buffer tubes. According to one aspect, the jacket is formed of polyethylene, the buffer tubes are formed of polyvinyl chloride (PVC) or a thermoplastic elastomer possessing flexible diol segments, and the buffer tubes are contained within the jacket in a helical or SZ stranding configuration. According to a second aspect, a fiber optic buffer tube includes low and high melting point materials forming domains and a matrix, respectively, and preferably further includes a filler. The domains are embedded in the matrix. The latter buffer tubes are bonded together by thermal activation of the domains.