JPS6241110Y2 - - Google Patents
Info
- Publication number
- JPS6241110Y2 JPS6241110Y2 JP18173782U JP18173782U JPS6241110Y2 JP S6241110 Y2 JPS6241110 Y2 JP S6241110Y2 JP 18173782 U JP18173782 U JP 18173782U JP 18173782 U JP18173782 U JP 18173782U JP S6241110 Y2 JPS6241110 Y2 JP S6241110Y2
- Authority
- JP
- Japan
- Prior art keywords
- bit
- adapter
- annular
- hole
- annular bit
- 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 9
- 230000002093 peripheral effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000011435 rock Substances 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000005219 brazing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18173782U JPS5989184U (ja) | 1982-11-30 | 1982-11-30 | 拡口ビツト |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18173782U JPS5989184U (ja) | 1982-11-30 | 1982-11-30 | 拡口ビツト |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5989184U JPS5989184U (ja) | 1984-06-16 |
| JPS6241110Y2 true JPS6241110Y2 (https=) | 1987-10-21 |
Family
ID=30393750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18173782U Granted JPS5989184U (ja) | 1982-11-30 | 1982-11-30 | 拡口ビツト |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5989184U (https=) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101127003B1 (ko) * | 2011-03-18 | 2012-03-26 | (주)세종이엔씨 | 완충 기능을 갖는 천공장치 및 이를 이용한 앵커 시공방법 |
-
1982
- 1982-11-30 JP JP18173782U patent/JPS5989184U/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5989184U (ja) | 1984-06-16 |
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