JPS5223502A - Hydraulic hole bottom striking device for boring - Google Patents
Hydraulic hole bottom striking device for boringInfo
- Publication number
- JPS5223502A JPS5223502A JP9993075A JP9993075A JPS5223502A JP S5223502 A JPS5223502 A JP S5223502A JP 9993075 A JP9993075 A JP 9993075A JP 9993075 A JP9993075 A JP 9993075A JP S5223502 A JPS5223502 A JP S5223502A
- Authority
- JP
- Japan
- Prior art keywords
- boring
- hole bottom
- striking device
- hydraulic hole
- bottom striking
- 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.)
- Pending
Links
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9993075A JPS5223502A (en) | 1975-08-18 | 1975-08-18 | Hydraulic hole bottom striking device for boring |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9993075A JPS5223502A (en) | 1975-08-18 | 1975-08-18 | Hydraulic hole bottom striking device for boring |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5223502A true JPS5223502A (en) | 1977-02-22 |
Family
ID=14260452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9993075A Pending JPS5223502A (en) | 1975-08-18 | 1975-08-18 | Hydraulic hole bottom striking device for boring |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5223502A (en) |
-
1975
- 1975-08-18 JP JP9993075A patent/JPS5223502A/en active Pending
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