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. 08, 1980
Filed:
Feb. 06, 1978
Koichiro Matsuno, Yokohama, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A pair of optical fibers each having a core and a plastic clad is connected end to end by removing end portions of the plastic clads to expose end portions of the cores of the fibers, and contacting the end portions of the cores so that the optical axis of one fibers. The contacting portion of the fibers are connected by heat melting. The connecting portion of the fibers are covered with a melting, and covering the connecting portion of the fibers with a protection sleeve composed of an inner plastic layer having a refractive index smaller than that of the core and an outer metal layer and having an inner diameter substantially equal to an outer diameter of the optical fiber. The ends of the sleeve are sealingly connected onto the outer surfaces of the optical fibers, respectively.