JP2521858Y2 - 地下構築物用の蓋 - Google Patents
地下構築物用の蓋Info
- Publication number
- JP2521858Y2 JP2521858Y2 JP1990007091U JP709190U JP2521858Y2 JP 2521858 Y2 JP2521858 Y2 JP 2521858Y2 JP 1990007091 U JP1990007091 U JP 1990007091U JP 709190 U JP709190 U JP 709190U JP 2521858 Y2 JP2521858 Y2 JP 2521858Y2
- Authority
- JP
- Japan
- Prior art keywords
- lid
- inspection
- outer lid
- locking
- keyhole
- 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
- 238000007689 inspection Methods 0.000 claims description 38
- 229910001018 Cast iron Inorganic materials 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000029087 digestion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990007091U JP2521858Y2 (ja) | 1990-01-30 | 1990-01-30 | 地下構築物用の蓋 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990007091U JP2521858Y2 (ja) | 1990-01-30 | 1990-01-30 | 地下構築物用の蓋 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0399073U JPH0399073U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1991-10-16 |
| JP2521858Y2 true JP2521858Y2 (ja) | 1997-01-08 |
Family
ID=31510751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990007091U Expired - Lifetime JP2521858Y2 (ja) | 1990-01-30 | 1990-01-30 | 地下構築物用の蓋 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2521858Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003317132A (ja) * | 2002-04-19 | 2003-11-07 | Itoki Crebio Corp | Ａｔｍのメンテナンス装置 |
| JP2004213381A (ja) * | 2002-12-27 | 2004-07-29 | Itoki Crebio Corp | Ａｔｍの手動式メンテナンス装置 |
| JP4657254B2 (ja) * | 2007-06-13 | 2011-03-23 | 国土交通省関東地方整備局長 | 換気口閉塞蓋 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5244467U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1975-09-26 | 1977-03-29 | ||
| JPS5925988U (ja) * | 1982-08-09 | 1984-02-17 | 株式会社明電舎 | 故障検出回路 |
| JPH0242752Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1984-08-31 | 1990-11-14 | ||
| JPH0242750Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1984-09-10 | 1990-11-14 |
-
1990
- 1990-01-30 JP JP1990007091U patent/JP2521858Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0399073U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1991-10-16 |