JPH0628491Y2 - マンホ−ル蓋板開閉用具 - Google Patents
マンホ−ル蓋板開閉用具Info
- Publication number
- JPH0628491Y2 JPH0628491Y2 JP11107987U JP11107987U JPH0628491Y2 JP H0628491 Y2 JPH0628491 Y2 JP H0628491Y2 JP 11107987 U JP11107987 U JP 11107987U JP 11107987 U JP11107987 U JP 11107987U JP H0628491 Y2 JPH0628491 Y2 JP H0628491Y2
- Authority
- JP
- Japan
- Prior art keywords
- key
- plate
- manhole cover
- closing tool
- opening
- 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
- 238000000034 method Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11107987U JPH0628491Y2 (ja) | 1987-07-20 | 1987-07-20 | マンホ−ル蓋板開閉用具 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11107987U JPH0628491Y2 (ja) | 1987-07-20 | 1987-07-20 | マンホ−ル蓋板開閉用具 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6414799U JPS6414799U (en, 2012) | 1989-01-25 |
| JPH0628491Y2 true JPH0628491Y2 (ja) | 1994-08-03 |
Family
ID=31348820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11107987U Expired - Lifetime JPH0628491Y2 (ja) | 1987-07-20 | 1987-07-20 | マンホ−ル蓋板開閉用具 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0628491Y2 (en, 2012) |
-
1987
- 1987-07-20 JP JP11107987U patent/JPH0628491Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6414799U (en, 2012) | 1989-01-25 |
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