JPH0417663Y2 - - Google Patents
Info
- Publication number
- JPH0417663Y2 JPH0417663Y2 JP7864287U JP7864287U JPH0417663Y2 JP H0417663 Y2 JPH0417663 Y2 JP H0417663Y2 JP 7864287 U JP7864287 U JP 7864287U JP 7864287 U JP7864287 U JP 7864287U JP H0417663 Y2 JPH0417663 Y2 JP H0417663Y2
- Authority
- JP
- Japan
- Prior art keywords
- lever
- kelly
- stopper plate
- earth drill
- drainage
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000009412 basement excavation Methods 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7864287U JPH0417663Y2 (en]) | 1987-05-25 | 1987-05-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7864287U JPH0417663Y2 (en]) | 1987-05-25 | 1987-05-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63185894U JPS63185894U (en]) | 1988-11-29 |
| JPH0417663Y2 true JPH0417663Y2 (en]) | 1992-04-20 |
Family
ID=30927772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7864287U Expired JPH0417663Y2 (en]) | 1987-05-25 | 1987-05-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0417663Y2 (en]) |
-
1987
- 1987-05-25 JP JP7864287U patent/JPH0417663Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63185894U (en]) | 1988-11-29 |
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