JPS63141284U - - Google Patents
Info
- Publication number
- JPS63141284U JPS63141284U JP3312887U JP3312887U JPS63141284U JP S63141284 U JPS63141284 U JP S63141284U JP 3312887 U JP3312887 U JP 3312887U JP 3312887 U JP3312887 U JP 3312887U JP S63141284 U JPS63141284 U JP S63141284U
- Authority
- JP
- Japan
- Prior art keywords
- rotary
- bit
- rod
- cylindrical
- center
- 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
- 238000009412 basement excavation Methods 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3312887U JPS63141284U (un) | 1987-03-09 | 1987-03-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3312887U JPS63141284U (un) | 1987-03-09 | 1987-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63141284U true JPS63141284U (un) | 1988-09-16 |
Family
ID=30840447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3312887U Pending JPS63141284U (un) | 1987-03-09 | 1987-03-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63141284U (un) |
-
1987
- 1987-03-09 JP JP3312887U patent/JPS63141284U/ja active Pending
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