JPS5484801A - Controll apparatus of oil pressure rock drill - Google Patents
Controll apparatus of oil pressure rock drillInfo
- Publication number
- JPS5484801A JPS5484801A JP15253677A JP15253677A JPS5484801A JP S5484801 A JPS5484801 A JP S5484801A JP 15253677 A JP15253677 A JP 15253677A JP 15253677 A JP15253677 A JP 15253677A JP S5484801 A JPS5484801 A JP S5484801A
- Authority
- JP
- Japan
- Prior art keywords
- oil pressure
- rock drill
- pressure rock
- controll apparatus
- controll
- 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
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Earth Drilling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15253677A JPS5855319B2 (en) | 1977-12-19 | 1977-12-19 | Hydraulic rock drill control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15253677A JPS5855319B2 (en) | 1977-12-19 | 1977-12-19 | Hydraulic rock drill control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5484801A true JPS5484801A (en) | 1979-07-06 |
JPS5855319B2 JPS5855319B2 (en) | 1983-12-09 |
Family
ID=15542579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15253677A Expired JPS5855319B2 (en) | 1977-12-19 | 1977-12-19 | Hydraulic rock drill control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5855319B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6057021U (en) * | 1983-09-26 | 1985-04-20 | 三菱電機株式会社 | Key button backlighting structure |
US4961958A (en) * | 1989-06-30 | 1990-10-09 | The Regents Of The Univ. Of Calif. | Process for making diamond, and doped diamond films at low temperature |
FR3017485B1 (en) * | 2014-02-13 | 2019-04-19 | Soletanche Freyssinet | METHOD AND INSTALLATION FOR CUTTING A REINFORCED CONCRETE MASSIVE |
-
1977
- 1977-12-19 JP JP15253677A patent/JPS5855319B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5855319B2 (en) | 1983-12-09 |
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