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:
Feb. 28, 1989
Filed:
Jun. 17, 1987
Candido J Arroyo, Lithonia, GA (US);
Benjamin C Ellis, Snellville, GA (US);
American Telephone and Telegraph Company, AT&T Bell Laboratories, Murray Hill, NJ (US);
AT&T Technologies, Inc., Berkeley Heights, NJ (US);
Abstract
An optical fiber cable includes a fluted strength member core (22) which comprises a plurality of ribs (26--26) extending radially from a center portion and a plurality of grooves (28--28), each groove being disposed between two adjacent ribs. The fluted core is such that the ratio of the diameter of a circle (41) which passes through an outermost surface of each rib to the diameter of a circle (44) through the inverts of the grooves does not exceed a predetermined value and cooperates with a reference width of each rib to allow a plurality of optical fibers to be disposed in each groove. Further, the geometry of the fluted core is such that the optical fibers are capable of longitudinal and lateral movement in the grooves. A core wrap (50) which may be made of a flame retardant material encloses the fluted core and a jacket (60) which is made of a plastic material encloses the core wrap.