JPS63176193U - - Google Patents
Info
- Publication number
- JPS63176193U JPS63176193U JP6531587U JP6531587U JPS63176193U JP S63176193 U JPS63176193 U JP S63176193U JP 6531587 U JP6531587 U JP 6531587U JP 6531587 U JP6531587 U JP 6531587U JP S63176193 U JPS63176193 U JP S63176193U
- Authority
- JP
- Japan
- Prior art keywords
- drill rod
- ring
- swivel joint
- threaded portion
- fitted
- 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.)
- Granted
Links
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 239000010687 lubricating oil Substances 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000005553 drilling Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6531587U JPH0439349Y2 (cs) | 1987-05-01 | 1987-05-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6531587U JPH0439349Y2 (cs) | 1987-05-01 | 1987-05-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63176193U true JPS63176193U (cs) | 1988-11-15 |
| JPH0439349Y2 JPH0439349Y2 (cs) | 1992-09-14 |
Family
ID=30902270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6531587U Expired JPH0439349Y2 (cs) | 1987-05-01 | 1987-05-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0439349Y2 (cs) |
-
1987
- 1987-05-01 JP JP6531587U patent/JPH0439349Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0439349Y2 (cs) | 1992-09-14 |