JPH0423992Y2 - - Google Patents
Info
- Publication number
- JPH0423992Y2 JPH0423992Y2 JP14378485U JP14378485U JPH0423992Y2 JP H0423992 Y2 JPH0423992 Y2 JP H0423992Y2 JP 14378485 U JP14378485 U JP 14378485U JP 14378485 U JP14378485 U JP 14378485U JP H0423992 Y2 JPH0423992 Y2 JP H0423992Y2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- oil
- cell
- guide cell
- cylinder
- 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
- 239000003921 oil Substances 0.000 claims description 112
- 239000010720 hydraulic oil Substances 0.000 claims description 40
- 238000005553 drilling Methods 0.000 claims description 28
- 239000011435 rock Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14378485U JPH0423992Y2 (pm) | 1985-09-20 | 1985-09-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14378485U JPH0423992Y2 (pm) | 1985-09-20 | 1985-09-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6255687U JPS6255687U (pm) | 1987-04-07 |
| JPH0423992Y2 true JPH0423992Y2 (pm) | 1992-06-04 |
Family
ID=31053782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14378485U Expired JPH0423992Y2 (pm) | 1985-09-20 | 1985-09-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0423992Y2 (pm) |
-
1985
- 1985-09-20 JP JP14378485U patent/JPH0423992Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6255687U (pm) | 1987-04-07 |
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