JPH0349191Y2 - - Google Patents
Info
- Publication number
- JPH0349191Y2 JPH0349191Y2 JP7858885U JP7858885U JPH0349191Y2 JP H0349191 Y2 JPH0349191 Y2 JP H0349191Y2 JP 7858885 U JP7858885 U JP 7858885U JP 7858885 U JP7858885 U JP 7858885U JP H0349191 Y2 JPH0349191 Y2 JP H0349191Y2
- Authority
- JP
- Japan
- Prior art keywords
- boom
- propulsion
- shaft
- movable
- 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.)
- Expired
Links
- 238000009412 basement excavation Methods 0.000 claims description 13
- 238000010276 construction Methods 0.000 description 5
- 239000003381 stabilizer Substances 0.000 description 5
- 239000003380 propellant Substances 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 2
- 230000008602 contraction Effects 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
- 238000000034 method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7858885U JPH0349191Y2 (fr) | 1985-05-28 | 1985-05-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7858885U JPH0349191Y2 (fr) | 1985-05-28 | 1985-05-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61198396U JPS61198396U (fr) | 1986-12-11 |
| JPH0349191Y2 true JPH0349191Y2 (fr) | 1991-10-21 |
Family
ID=30622698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7858885U Expired JPH0349191Y2 (fr) | 1985-05-28 | 1985-05-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0349191Y2 (fr) |
-
1985
- 1985-05-28 JP JP7858885U patent/JPH0349191Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61198396U (fr) | 1986-12-11 |
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