JP2540963Y2 - マンホール用放圧型鉄蓋 - Google Patents
マンホール用放圧型鉄蓋Info
- Publication number
- JP2540963Y2 JP2540963Y2 JP1991000382U JP38291U JP2540963Y2 JP 2540963 Y2 JP2540963 Y2 JP 2540963Y2 JP 1991000382 U JP1991000382 U JP 1991000382U JP 38291 U JP38291 U JP 38291U JP 2540963 Y2 JP2540963 Y2 JP 2540963Y2
- Authority
- JP
- Japan
- Prior art keywords
- manhole
- spacer
- iron cover
- pin
- flange
- 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.)
- Expired - Lifetime
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 66
- 229910052742 iron Inorganic materials 0.000 title claims description 33
- 125000006850 spacer group Chemical group 0.000 claims description 16
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000004880 explosion Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991000382U JP2540963Y2 (ja) | 1991-01-10 | 1991-01-10 | マンホール用放圧型鉄蓋 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991000382U JP2540963Y2 (ja) | 1991-01-10 | 1991-01-10 | マンホール用放圧型鉄蓋 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0497943U JPH0497943U (enExample) | 1992-08-25 |
| JP2540963Y2 true JP2540963Y2 (ja) | 1997-07-09 |
Family
ID=11472253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991000382U Expired - Lifetime JP2540963Y2 (ja) | 1991-01-10 | 1991-01-10 | マンホール用放圧型鉄蓋 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2540963Y2 (enExample) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0743189Y2 (ja) * | 1991-05-17 | 1995-10-04 | 東京電力株式会社 | ハンドホール等における蓋体の耐爆ロック機構 |
| JP2002106051A (ja) * | 2000-09-27 | 2002-04-10 | Maezawa Kasei Ind Co Ltd | 既設マンホールの補修方法および補修桝 |
| CN115680029B (zh) * | 2021-07-30 | 2025-06-20 | 江苏华彤建设工程有限公司 | 一种智能泄压抑爆防井盖飞起的安全井盖 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5571756U (enExample) * | 1978-11-13 | 1980-05-17 |
-
1991
- 1991-01-10 JP JP1991000382U patent/JP2540963Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0497943U (enExample) | 1992-08-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |