Title:
直接埋設用ケーブル
Document Type and Number:
Japanese Patent JP6590751
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a direct-burying cable for which repair and maintenance can be performed in a short time.SOLUTION: A direct-burying cable 1 includes an inner first sheath (inner sheath 22) and an outer second sheath (reinforcement type outer coating 10). The second sheath is loosely fitted to the first sheath. Preferably, the second sheath is formed with a rigid plastic. More preferably, a gap between an inner peripheral surface of the second sheath and an outer peripheral surface of the first sheath is firmly engaged with each other in at least one end of the direct-burying cable. Further preferably, a cross section of the second sheath in its longitudinal direction is formed in a wave shape.SELECTED DRAWING: Figure 1
Inventors:
Naori Nagata
Masakazu Takami
Yuji Aoyagi
Mamoru Kanayama
Kiyoshi Omoto
Katsushi Nakatani
Yoshihiro Iriyama
Katsuhiro Tanabe
Atsushi Onishi
Youhei Endo
Masakazu Takami
Yuji Aoyagi
Mamoru Kanayama
Kiyoshi Omoto
Katsushi Nakatani
Yoshihiro Iriyama
Katsuhiro Tanabe
Atsushi Onishi
Youhei Endo
Application Number:
JP2016081243A
Publication Date:
October 16, 2019
Filing Date:
April 14, 2016
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
Nippon Telegraph and Telephone Corporation
Nippon Telegraph and Telephone Corporation
International Classes:
G02B6/44; G02B6/50; H01B7/18; H02G3/04; H02G9/06
Domestic Patent References:
| JP6077437U | ||||
| JP46024179Y1 | ||||
| JP2003009328A | ||||
| JP2004180474A |
Foreign References:
| US4309072 |
Attorney, Agent or Firm:
Towa Nagisa International Patent Office