JPS61114716U - - Google Patents
Info
- Publication number
- JPS61114716U JPS61114716U JP20058984U JP20058984U JPS61114716U JP S61114716 U JPS61114716 U JP S61114716U JP 20058984 U JP20058984 U JP 20058984U JP 20058984 U JP20058984 U JP 20058984U JP S61114716 U JPS61114716 U JP S61114716U
- Authority
- JP
- Japan
- Prior art keywords
- communication cable
- fireproof layer
- strands
- electrically insulating
- tunnel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004020 conductor Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
Landscapes
- Insulated Conductors (AREA)
- Communication Cables (AREA)
Description
第１図は本考案の洞道内布設用通信ケーブルの
一部概略斜視図、第２図は本考案に用いる素線の
他の実施例を示す概略断面図である。
（図面の符号）１：素線、２：電気絶縁性耐火
層、３：電気絶縁層、４：導体、５：シールド、
６：シース、７：通信ケーブル、８：コア。
FIG. 1 is a partially schematic perspective view of a communication cable for installation in a tunnel according to the present invention, and FIG. 2 is a schematic cross-sectional view showing another embodiment of the wire used in the present invention. (Drawing codes) 1: Element wire, 2: Electrically insulating fireproof layer, 3: Electrically insulating layer, 4: Conductor, 5: Shield,
6: sheath, 7: communication cable, 8: core.
Claims (1)
道内布設用通信ケーブルにおいて、該コアを形成
する素線の一部または全部が電気絶縁性の耐火層
を有してなる洞道内布設用通信ケーブル。 ２ 前記耐火層が導体直上に設けられてなる実用
新案登録請求の範囲第１項記載の通信ケーブル。 ３ 前記耐火層が電気絶縁層を介して導体上に設
けられてなる実用新案登録請求の範囲第１項記載
の通信ケーブル。 ４ 少なくとも重要回線用の素線が前記耐火層を
有してなる実用新案登録請求の範囲第１項、第２
項または第３項記載の通信ケーブル。[Claims for Utility Model Registration] 1. A communication cable for installation in a tunnel having a core formed from a large number of strands, in which some or all of the strands forming the core have an electrically insulating fireproof layer. Communication cable for installation inside the tunnel. 2. The communication cable according to claim 1, wherein the fireproof layer is provided directly above the conductor. 3. The communication cable according to claim 1, wherein the fireproof layer is provided on a conductor via an electrically insulating layer. 4 Utility model registration claims 1 and 2, in which at least the strands for important lines have the fireproof layer.
The communication cable described in item 3 or item 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20058984U JPS61114716U (en) | 1984-12-28 | 1984-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20058984U JPS61114716U (en) | 1984-12-28 | 1984-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61114716U true JPS61114716U (en) | 1986-07-19 |
Family
ID=30761582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20058984U Pending JPS61114716U (en) | 1984-12-28 | 1984-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61114716U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018520472A (en) * | 2015-06-05 | 2018-07-26 | レオニ カーベル ゲーエムベーハー | Data cable |
-
1984
- 1984-12-28 JP JP20058984U patent/JPS61114716U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018520472A (en) * | 2015-06-05 | 2018-07-26 | レオニ カーベル ゲーエムベーハー | Data cable |
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