JPH0235918Y2 - - Google Patents
Info
- Publication number
- JPH0235918Y2 JPH0235918Y2 JP14961684U JP14961684U JPH0235918Y2 JP H0235918 Y2 JPH0235918 Y2 JP H0235918Y2 JP 14961684 U JP14961684 U JP 14961684U JP 14961684 U JP14961684 U JP 14961684U JP H0235918 Y2 JPH0235918 Y2 JP H0235918Y2
- Authority
- JP
- Japan
- Prior art keywords
- tip
- screw
- pipe
- casing
- leading pipe
- 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
- 238000009412 basement excavation Methods 0.000 claims description 22
- 238000005553 drilling Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000003517 fume Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009933 burial Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14961684U JPH0235918Y2 (US20090163788A1-20090625-C00002.png) | 1984-10-04 | 1984-10-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14961684U JPH0235918Y2 (US20090163788A1-20090625-C00002.png) | 1984-10-04 | 1984-10-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6168192U JPS6168192U (US20090163788A1-20090625-C00002.png) | 1986-05-10 |
| JPH0235918Y2 true JPH0235918Y2 (US20090163788A1-20090625-C00002.png) | 1990-10-01 |
Family
ID=30707788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14961684U Expired JPH0235918Y2 (US20090163788A1-20090625-C00002.png) | 1984-10-04 | 1984-10-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0235918Y2 (US20090163788A1-20090625-C00002.png) |
-
1984
- 1984-10-04 JP JP14961684U patent/JPH0235918Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6168192U (US20090163788A1-20090625-C00002.png) | 1986-05-10 |
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