JPS6133110Y2 - - Google Patents
Info
- Publication number
- JPS6133110Y2 JPS6133110Y2 JP816781U JP816781U JPS6133110Y2 JP S6133110 Y2 JPS6133110 Y2 JP S6133110Y2 JP 816781 U JP816781 U JP 816781U JP 816781 U JP816781 U JP 816781U JP S6133110 Y2 JPS6133110 Y2 JP S6133110Y2
- Authority
- JP
- Japan
- Prior art keywords
- rod
- rods
- sleeve
- joint sleeve
- joint
- 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 claims description 9
- 239000011435 rock Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP816781U JPS6133110Y2 (cs) | 1981-01-22 | 1981-01-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP816781U JPS6133110Y2 (cs) | 1981-01-22 | 1981-01-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57123891U JPS57123891U (cs) | 1982-08-02 |
| JPS6133110Y2 true JPS6133110Y2 (cs) | 1986-09-26 |
Family
ID=29806330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP816781U Expired JPS6133110Y2 (cs) | 1981-01-22 | 1981-01-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6133110Y2 (cs) |
-
1981
- 1981-01-22 JP JP816781U patent/JPS6133110Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57123891U (cs) | 1982-08-02 |
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