Longitudinal sealing device for an optical cable core
US5046814A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1990 |
| Grant date | Sep 10, 1991 |
| Priority date | — |
| Expiry date | Dec 12, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4427
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This device is interposed between two lengths of an optical fiber lead-in cable comprising a core constitution by a small diameter stainless steel tube containing a bundle of optical fibers comprises: a metal plug which is brazed to the end of one length of tube and which includes a barrel including a cavity whose diameter is not less than the diameter of the bundle of fibers and whose outside surface has a diameter which is greater than the diameter of the tube, said outside surface being provided with transverse grooves; a block of epoxy resin molded both over a portion of a bundle of fibers and over the barrel; the resin covering portions of the bundle both inside and outside the barrel; a sleeve fixed in sealed manner to the other length of tube; a clamping ring; a viscous hydrophobic liquid injected into the space remaining empty between the sleeve and the block of epoxy resin; and epoxy resin injected into the cavities inside the sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.