JPH0447251Y2 - - Google Patents
Info
- Publication number
- JPH0447251Y2 JPH0447251Y2 JP4488786U JP4488786U JPH0447251Y2 JP H0447251 Y2 JPH0447251 Y2 JP H0447251Y2 JP 4488786 U JP4488786 U JP 4488786U JP 4488786 U JP4488786 U JP 4488786U JP H0447251 Y2 JPH0447251 Y2 JP H0447251Y2
- Authority
- JP
- Japan
- Prior art keywords
- main body
- manhole
- inner cover
- surface portion
- notch
- 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
Links
- 238000005192 partition Methods 0.000 claims description 9
- 230000003028 elevating effect Effects 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4488786U JPH0447251Y2 (en]) | 1986-03-28 | 1986-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4488786U JPH0447251Y2 (en]) | 1986-03-28 | 1986-03-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62159559U JPS62159559U (en]) | 1987-10-09 |
| JPH0447251Y2 true JPH0447251Y2 (en]) | 1992-11-09 |
Family
ID=30863120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4488786U Expired JPH0447251Y2 (en]) | 1986-03-28 | 1986-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0447251Y2 (en]) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH072710Y2 (ja) * | 1988-01-22 | 1995-01-25 | 株式会社ハッコー | マンホール |
| JP2018193699A (ja) * | 2017-05-15 | 2018-12-06 | 株式会社土井製作所 | ハンドホール |
| JP2019218722A (ja) * | 2018-06-18 | 2019-12-26 | アイレック技建株式会社 | マンホールの止水構造 |
-
1986
- 1986-03-28 JP JP4488786U patent/JPH0447251Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62159559U (en]) | 1987-10-09 |
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