JP2006050713A - 凍結故障防止用通信ケーブル埋設管、内径調節用管継手及びそれらを用いた凍結故障防止用通信ケーブル埋設管構造 - Google Patents
凍結故障防止用通信ケーブル埋設管、内径調節用管継手及びそれらを用いた凍結故障防止用通信ケーブル埋設管構造 Download PDFInfo
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- JP2006050713A JP2006050713A JP2004225709A JP2004225709A JP2006050713A JP 2006050713 A JP2006050713 A JP 2006050713A JP 2004225709 A JP2004225709 A JP 2004225709A JP 2004225709 A JP2004225709 A JP 2004225709A JP 2006050713 A JP2006050713 A JP 2006050713A
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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
【解決手段】 外管体の内側に、体積膨張吸収材料層と、内面が実質的に平滑で前記体積膨張吸収材料層を外管体内に固定する可撓性管が順次積層されていることを特徴とする凍結故障防止用通信ケーブル埋設管。
【選択図】 図2
Description
2、9 体積膨張吸収材料層
3、10 有孔管
3a、10a 半円筒状の中空リブ
3b、10b 貫通孔
4 凍結故障防止用通信ケーブル埋設管
5 内径調節用管継手
6 縮径部
7 拡径部
8 継手本体
11 ゴムキャップ
12 テーパー部
13 従来から使用されている通信ケーブル埋設管
Claims (7)
- 外管体の内側に、体積膨張吸収材料層と、内面が実質的に平滑で前記体積膨張吸収材料層を外管体内に固定する可撓性管が順次積層されていることを特徴とする凍結故障防止用通信ケーブル埋設管。
- 可撓性管が、側壁に多数の貫通孔を有する中空リブ構造の有孔管であることを特徴とする請求項1記載の凍結故障防止用通信ケーブル埋設管。
- 体積膨張吸収材料が、発泡倍率が20〜50倍であり、独立気泡を有する樹脂発泡体であることを特徴とする請求項1又は2記載の凍結故障防止用通信ケーブル埋設管。
- 縮径部と拡径部を有する内径調節用管継手であって、縮径部は継手本体内側に、体積膨張吸収材料層と、内面が実質的に平滑で前記体積膨張吸収材料層を継手本体内に固定する可撓性管が順次積層されてなり、縮径部側端面が継手本体と可撓性管の間隙を塞ぐ閉塞部材を介して内側方向にテーパー状になされていることを特徴とする内径調節用管継手。
- 縮径部側端部付近の体積膨張吸収材料層が可撓性管より短くなるように切り欠かれ、該切欠き部に閉塞部材が嵌合され、且つ、継手本体と閉塞部材で形成される縮径部側端面が内側方向にテーパー状になされていることを特徴とする請求項4記載の内径調節用管継手。
- 可撓性管が、側壁に多数の貫通孔を有する中空リブ構造の有孔管であることを特徴とする請求項4又は5記載の内径調節用管継手。
- 請求項1〜3のいずれか1項記載の凍結故障防止用通信ケーブル埋設管と通信ケーブル埋設管が請求項4〜6のいずれか1項記載の内径調節用管継手により接続されていることを特徴とする凍結故障防止用通信ケーブル埋設管構造。
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JP2004225709A JP4358062B2 (ja) | 2004-08-02 | 2004-08-02 | 凍結故障防止用通信ケーブル埋設管、内径調節用管継手及びそれらを用いた凍結故障防止用通信ケーブル埋設管構造 |
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JP2004225709A JP4358062B2 (ja) | 2004-08-02 | 2004-08-02 | 凍結故障防止用通信ケーブル埋設管、内径調節用管継手及びそれらを用いた凍結故障防止用通信ケーブル埋設管構造 |
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JP2006050713A true JP2006050713A (ja) | 2006-02-16 |
JP4358062B2 JP4358062B2 (ja) | 2009-11-04 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7991256B2 (en) | 2006-07-19 | 2011-08-02 | Draka Comteq, B.V. | Optical fiber cable and method for modifying the same |
JP2013039009A (ja) * | 2011-08-11 | 2013-02-21 | Tigers Polymer Corp | 通信ケーブル保護管 |
EP3830617A4 (en) * | 2018-08-02 | 2022-05-04 | Corning Research & Development Corporation | FIRE RESISTANT CABLE WITH TWO SHEATH SEPARATED BY A POROUS INSULATION LAYER |
US11360283B1 (en) * | 2021-05-14 | 2022-06-14 | Steven Haagenson | Volume donating compressible filler system and method |
US11451039B1 (en) | 2021-05-14 | 2022-09-20 | Steven Haagenson | Freeze protection through volume donation |
WO2023152842A1 (ja) * | 2022-02-09 | 2023-08-17 | 日本電信電話株式会社 | 埋設管及び埋設管の防護方法 |
-
2004
- 2004-08-02 JP JP2004225709A patent/JP4358062B2/ja active Active
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7991256B2 (en) | 2006-07-19 | 2011-08-02 | Draka Comteq, B.V. | Optical fiber cable and method for modifying the same |
JP2013039009A (ja) * | 2011-08-11 | 2013-02-21 | Tigers Polymer Corp | 通信ケーブル保護管 |
EP3830617A4 (en) * | 2018-08-02 | 2022-05-04 | Corning Research & Development Corporation | FIRE RESISTANT CABLE WITH TWO SHEATH SEPARATED BY A POROUS INSULATION LAYER |
US11448841B2 (en) | 2018-08-02 | 2022-09-20 | Corning Research & Development Corporation | Fire resistant cable having two jackets separated by porous insulating layer |
US11630275B2 (en) | 2018-08-02 | 2023-04-18 | Corning Research & Development Corporation | Fire resistant cable having two jackets separated by porous insulating layer |
US11360283B1 (en) * | 2021-05-14 | 2022-06-14 | Steven Haagenson | Volume donating compressible filler system and method |
US11451039B1 (en) | 2021-05-14 | 2022-09-20 | Steven Haagenson | Freeze protection through volume donation |
WO2023152842A1 (ja) * | 2022-02-09 | 2023-08-17 | 日本電信電話株式会社 | 埋設管及び埋設管の防護方法 |
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