JPS6220549Y2 - - Google Patents
Info
- Publication number
- JPS6220549Y2 JPS6220549Y2 JP13638880U JP13638880U JPS6220549Y2 JP S6220549 Y2 JPS6220549 Y2 JP S6220549Y2 JP 13638880 U JP13638880 U JP 13638880U JP 13638880 U JP13638880 U JP 13638880U JP S6220549 Y2 JPS6220549 Y2 JP S6220549Y2
- Authority
- JP
- Japan
- Prior art keywords
- tip
- drilling
- carbide
- cutting
- cutter
- 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 19
- 230000003014 reinforcing effect Effects 0.000 description 15
- 239000004567 concrete Substances 0.000 description 6
- 239000011150 reinforced concrete Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13638880U JPS6220549Y2 (xx) | 1980-09-24 | 1980-09-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13638880U JPS6220549Y2 (xx) | 1980-09-24 | 1980-09-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5760988U JPS5760988U (xx) | 1982-04-10 |
| JPS6220549Y2 true JPS6220549Y2 (xx) | 1987-05-25 |
Family
ID=29496502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13638880U Expired JPS6220549Y2 (xx) | 1980-09-24 | 1980-09-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6220549Y2 (xx) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0791932B2 (ja) * | 1991-07-08 | 1995-10-09 | 盛吉 山本 | ケーシングヘッド |
| JP2590640B2 (ja) * | 1991-08-30 | 1997-03-12 | 富士通株式会社 | 携帯用機器の懸吊構造 |
| KR100440871B1 (ko) * | 2001-02-19 | 2004-07-19 | 이화다이아몬드공업 주식회사 | 코어 드릴 |
-
1980
- 1980-09-24 JP JP13638880U patent/JPS6220549Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5760988U (xx) | 1982-04-10 |
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