JPS6453293U - - Google Patents
Info
- Publication number
- JPS6453293U JPS6453293U JP14594687U JP14594687U JPS6453293U JP S6453293 U JPS6453293 U JP S6453293U JP 14594687 U JP14594687 U JP 14594687U JP 14594687 U JP14594687 U JP 14594687U JP S6453293 U JPS6453293 U JP S6453293U
- Authority
- JP
- Japan
- Prior art keywords
- casing
- bit
- outer diameter
- notch
- axis
- 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
- 238000005553 drilling Methods 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims 2
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14594687U JPS6453293U (de) | 1987-09-25 | 1987-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14594687U JPS6453293U (de) | 1987-09-25 | 1987-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6453293U true JPS6453293U (de) | 1989-04-03 |
Family
ID=31414984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14594687U Pending JPS6453293U (de) | 1987-09-25 | 1987-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6453293U (de) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5751391A (en) * | 1980-09-10 | 1982-03-26 | Toyosaku Shibata | Expanding air hammer |
| JPS6088780A (ja) * | 1983-09-23 | 1985-05-18 | ヤン エドバルド ペルソン | 掘削装置 |
-
1987
- 1987-09-25 JP JP14594687U patent/JPS6453293U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5751391A (en) * | 1980-09-10 | 1982-03-26 | Toyosaku Shibata | Expanding air hammer |
| JPS6088780A (ja) * | 1983-09-23 | 1985-05-18 | ヤン エドバルド ペルソン | 掘削装置 |