JPH0340956Y2 - - Google Patents
Info
- Publication number
- JPH0340956Y2 JPH0340956Y2 JP14290787U JP14290787U JPH0340956Y2 JP H0340956 Y2 JPH0340956 Y2 JP H0340956Y2 JP 14290787 U JP14290787 U JP 14290787U JP 14290787 U JP14290787 U JP 14290787U JP H0340956 Y2 JPH0340956 Y2 JP H0340956Y2
- Authority
- JP
- Japan
- Prior art keywords
- chips
- base
- tip
- ring bit
- edge
- 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
- 238000009825 accumulation Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 210000003029 clitoris Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14290787U JPH0340956Y2 (un) | 1987-09-17 | 1987-09-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14290787U JPH0340956Y2 (un) | 1987-09-17 | 1987-09-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6447892U JPS6447892U (un) | 1989-03-24 |
| JPH0340956Y2 true JPH0340956Y2 (un) | 1991-08-28 |
Family
ID=31409250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14290787U Expired JPH0340956Y2 (un) | 1987-09-17 | 1987-09-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0340956Y2 (un) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2525225Y2 (ja) * | 1990-04-24 | 1997-02-05 | 鉱研工業株式会社 | リングビット |
-
1987
- 1987-09-17 JP JP14290787U patent/JPH0340956Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6447892U (un) | 1989-03-24 |
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