Title:
既設管への光ケーブル敷設構造
Document Type and Number:
Japanese Patent JP7288761
Kind Code:
B2
Abstract:
To provide an optical cable laying structure to an existing pipe that can reduce expenses required for operations such as repairing and maintaining an optical cable laying area in a dam and replacing optical cables and improve safety of operations such as repairing and maintaining the optical cable laying area in the dam and replacing the optical cables.SOLUTION: In an optical cable laying structure to an existing pipe 1, a pull box 10 allowing an optical cable 7 to be inserted into the existing pipe 1 with a curvature radius equal to or greater than a permissible curvature radius or allowing the optical cable 7 to be taken out from the existing pipe 1 with the curvature radius equal to or greater than the permissible curvature radius is mounted to the end of the existing pipe 1 installed in a dam body 5 of a dam 4.SELECTED DRAWING: Figure 2
Inventors:
Mitsuo Morinaga
Satoshi Okada
Satoshi Okada
Application Number:
JP2019000551A
Publication Date:
June 08, 2023
Filing Date:
January 07, 2019
Export Citation:
Assignee:
Chugoku Electric Power Co., Inc.
Nippon Retech Co., Ltd.
Nippon Retech Co., Ltd.
International Classes:
G02B6/46; E02B8/00
Domestic Patent References:
| JP2003174708A | ||||
| JP2011250502A | ||||
| JP2001196754A |
Foreign References:
| CN202404285U | ||||
| US20030108305 |
Attorney, Agent or Firm:
Koyo International Patent Office
Kotake & Partners Patent Attorney Corporation
Kotake & Partners Patent Attorney Corporation