JPH0278686U - - Google Patents
Info
- Publication number
- JPH0278686U JPH0278686U JP15427188U JP15427188U JPH0278686U JP H0278686 U JPH0278686 U JP H0278686U JP 15427188 U JP15427188 U JP 15427188U JP 15427188 U JP15427188 U JP 15427188U JP H0278686 U JPH0278686 U JP H0278686U
- Authority
- JP
- Japan
- Prior art keywords
- cutter
- tube
- tip
- annular
- excavation
- 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 3
- 238000005553 drilling Methods 0.000 claims 1
- 238000005498 polishing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15427188U JPH0278686U (cs) | 1988-11-29 | 1988-11-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15427188U JPH0278686U (cs) | 1988-11-29 | 1988-11-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0278686U true JPH0278686U (cs) | 1990-06-18 |
Family
ID=31430853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15427188U Pending JPH0278686U (cs) | 1988-11-29 | 1988-11-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0278686U (cs) |
-
1988
- 1988-11-29 JP JP15427188U patent/JPH0278686U/ja active Pending