JPS6136623Y2 - - Google Patents
Info
- Publication number
- JPS6136623Y2 JPS6136623Y2 JP1981190734U JP19073481U JPS6136623Y2 JP S6136623 Y2 JPS6136623 Y2 JP S6136623Y2 JP 1981190734 U JP1981190734 U JP 1981190734U JP 19073481 U JP19073481 U JP 19073481U JP S6136623 Y2 JPS6136623 Y2 JP S6136623Y2
- Authority
- JP
- Japan
- Prior art keywords
- slip
- drill pipe
- base frame
- hydraulic jack
- semicircular part
- 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
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19073481U JPS5894787U (ja) | 1981-12-21 | 1981-12-21 | 竪孔掘削機のスリツプ装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19073481U JPS5894787U (ja) | 1981-12-21 | 1981-12-21 | 竪孔掘削機のスリツプ装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5894787U JPS5894787U (ja) | 1983-06-27 |
JPS6136623Y2 true JPS6136623Y2 (en, 2012) | 1986-10-23 |
Family
ID=30104248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19073481U Granted JPS5894787U (ja) | 1981-12-21 | 1981-12-21 | 竪孔掘削機のスリツプ装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5894787U (en, 2012) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001342789A (ja) * | 2000-05-31 | 2001-12-14 | Mitani Sekisan Co Ltd | 杭穴掘削時の事故予防方法及び掘削ロッド |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5581995A (en) * | 1978-12-15 | 1980-06-20 | Hitachi Construction Machinery | Fulllcasing type reverse circulation drill method and apparatus |
-
1981
- 1981-12-21 JP JP19073481U patent/JPS5894787U/ja active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001342789A (ja) * | 2000-05-31 | 2001-12-14 | Mitani Sekisan Co Ltd | 杭穴掘削時の事故予防方法及び掘削ロッド |
Also Published As
Publication number | Publication date |
---|---|
JPS5894787U (ja) | 1983-06-27 |
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