JPS6139021Y2 - - Google Patents
Info
- Publication number
- JPS6139021Y2 JPS6139021Y2 JP7662681U JP7662681U JPS6139021Y2 JP S6139021 Y2 JPS6139021 Y2 JP S6139021Y2 JP 7662681 U JP7662681 U JP 7662681U JP 7662681 U JP7662681 U JP 7662681U JP S6139021 Y2 JPS6139021 Y2 JP S6139021Y2
- Authority
- JP
- Japan
- Prior art keywords
- socket
- pipe
- tube
- protrusion
- tip
- 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
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7662681U JPS6139021Y2 (fr) | 1981-05-27 | 1981-05-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7662681U JPS6139021Y2 (fr) | 1981-05-27 | 1981-05-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57187892U JPS57187892U (fr) | 1982-11-29 |
| JPS6139021Y2 true JPS6139021Y2 (fr) | 1986-11-10 |
Family
ID=29872304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7662681U Expired JPS6139021Y2 (fr) | 1981-05-27 | 1981-05-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6139021Y2 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH052711Y2 (fr) * | 1986-03-26 | 1993-01-22 |
-
1981
- 1981-05-27 JP JP7662681U patent/JPS6139021Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57187892U (fr) | 1982-11-29 |
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