JPS6117096Y2 - - Google Patents
Info
- Publication number
- JPS6117096Y2 JPS6117096Y2 JP5423881U JP5423881U JPS6117096Y2 JP S6117096 Y2 JPS6117096 Y2 JP S6117096Y2 JP 5423881 U JP5423881 U JP 5423881U JP 5423881 U JP5423881 U JP 5423881U JP S6117096 Y2 JPS6117096 Y2 JP S6117096Y2
- Authority
- JP
- Japan
- Prior art keywords
- rod
- drilling machine
- leader
- hook
- centralizer
- 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 30
- 239000011435 rock Substances 0.000 claims description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000004080 punching Methods 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 |
---|---|---|---|
JP5423881U JPS6117096Y2 (enrdf_load_stackoverflow) | 1981-04-14 | 1981-04-14 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5423881U JPS6117096Y2 (enrdf_load_stackoverflow) | 1981-04-14 | 1981-04-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57168588U JPS57168588U (enrdf_load_stackoverflow) | 1982-10-23 |
JPS6117096Y2 true JPS6117096Y2 (enrdf_load_stackoverflow) | 1986-05-26 |
Family
ID=29850840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5423881U Expired JPS6117096Y2 (enrdf_load_stackoverflow) | 1981-04-14 | 1981-04-14 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6117096Y2 (enrdf_load_stackoverflow) |
-
1981
- 1981-04-14 JP JP5423881U patent/JPS6117096Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS57168588U (enrdf_load_stackoverflow) | 1982-10-23 |
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