JPH02120539U - - Google Patents
Info
- Publication number
- JPH02120539U JPH02120539U JP2935089U JP2935089U JPH02120539U JP H02120539 U JPH02120539 U JP H02120539U JP 2935089 U JP2935089 U JP 2935089U JP 2935089 U JP2935089 U JP 2935089U JP H02120539 U JPH02120539 U JP H02120539U
- Authority
- JP
- Japan
- Prior art keywords
- horizontal pivot
- arm
- lid
- roller
- cylinder
- 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.)
- Pending
Links
- 230000005484 gravity Effects 0.000 claims 1
- 238000005096 rolling process Methods 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2935089U JPH02120539U (nl) | 1989-03-15 | 1989-03-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2935089U JPH02120539U (nl) | 1989-03-15 | 1989-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02120539U true JPH02120539U (nl) | 1990-09-28 |
Family
ID=31253489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2935089U Pending JPH02120539U (nl) | 1989-03-15 | 1989-03-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02120539U (nl) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008308851A (ja) * | 2007-06-13 | 2008-12-25 | Kanto Regional Development Bureau Ministry Of Land Infrastructure & Transport | 換気口閉塞蓋 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5854133A (ja) * | 1981-09-26 | 1983-03-31 | Takaoka Ind Ltd | 重量蓋の開閉機構 |
| JPS61211425A (ja) * | 1985-03-14 | 1986-09-19 | Doi Seisakusho:Kk | 地中構造物用蓋開閉装置 |
-
1989
- 1989-03-15 JP JP2935089U patent/JPH02120539U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5854133A (ja) * | 1981-09-26 | 1983-03-31 | Takaoka Ind Ltd | 重量蓋の開閉機構 |
| JPS61211425A (ja) * | 1985-03-14 | 1986-09-19 | Doi Seisakusho:Kk | 地中構造物用蓋開閉装置 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008308851A (ja) * | 2007-06-13 | 2008-12-25 | Kanto Regional Development Bureau Ministry Of Land Infrastructure & Transport | 換気口閉塞蓋 |
| 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 |