JPS6139023Y2 - - Google Patents
Info
- Publication number
- JPS6139023Y2 JPS6139023Y2 JP16986580U JP16986580U JPS6139023Y2 JP S6139023 Y2 JPS6139023 Y2 JP S6139023Y2 JP 16986580 U JP16986580 U JP 16986580U JP 16986580 U JP16986580 U JP 16986580U JP S6139023 Y2 JPS6139023 Y2 JP S6139023Y2
- Authority
- JP
- Japan
- Prior art keywords
- tip
- tip body
- hydraulic jack
- pipe
- hydraulic
- 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
- 238000005553 drilling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010959 steel 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 |
---|---|---|---|
JP16986580U JPS6139023Y2 (de) | 1980-11-27 | 1980-11-27 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16986580U JPS6139023Y2 (de) | 1980-11-27 | 1980-11-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5791895U JPS5791895U (de) | 1982-06-05 |
JPS6139023Y2 true JPS6139023Y2 (de) | 1986-11-10 |
Family
ID=29528343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16986580U Expired JPS6139023Y2 (de) | 1980-11-27 | 1980-11-27 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6139023Y2 (de) |
-
1980
- 1980-11-27 JP JP16986580U patent/JPS6139023Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5791895U (de) | 1982-06-05 |
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