JPS6171687U - - Google Patents
Info
- Publication number
- JPS6171687U JPS6171687U JP15592484U JP15592484U JPS6171687U JP S6171687 U JPS6171687 U JP S6171687U JP 15592484 U JP15592484 U JP 15592484U JP 15592484 U JP15592484 U JP 15592484U JP S6171687 U JPS6171687 U JP S6171687U
- Authority
- JP
- Japan
- Prior art keywords
- valve body
- lubricating oil
- rod
- valve
- shaft portion
- 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
- 239000010687 lubricating oil Substances 0.000 claims description 9
- 239000003921 oil Substances 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15592484U JPH0230554Y2 (ko) | 1984-10-16 | 1984-10-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15592484U JPH0230554Y2 (ko) | 1984-10-16 | 1984-10-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6171687U true JPS6171687U (ko) | 1986-05-15 |
| JPH0230554Y2 JPH0230554Y2 (ko) | 1990-08-16 |
Family
ID=30713937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15592484U Expired JPH0230554Y2 (ko) | 1984-10-16 | 1984-10-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0230554Y2 (ko) |
-
1984
- 1984-10-16 JP JP15592484U patent/JPH0230554Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0230554Y2 (ko) | 1990-08-16 |