JPH0422888Y2 - - Google Patents
Info
- Publication number
- JPH0422888Y2 JPH0422888Y2 JP1985107026U JP10702685U JPH0422888Y2 JP H0422888 Y2 JPH0422888 Y2 JP H0422888Y2 JP 1985107026 U JP1985107026 U JP 1985107026U JP 10702685 U JP10702685 U JP 10702685U JP H0422888 Y2 JPH0422888 Y2 JP H0422888Y2
- Authority
- JP
- Japan
- Prior art keywords
- tension ring
- disc
- annular groove
- drilling
- shank
- 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 35
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
Landscapes
- Drilling Tools (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985107026U JPH0422888Y2 (xx) | 1985-07-12 | 1985-07-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985107026U JPH0422888Y2 (xx) | 1985-07-12 | 1985-07-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6215411U JPS6215411U (xx) | 1987-01-29 |
| JPH0422888Y2 true JPH0422888Y2 (xx) | 1992-05-27 |
Family
ID=30982921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985107026U Expired JPH0422888Y2 (xx) | 1985-07-12 | 1985-07-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0422888Y2 (xx) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0533643Y2 (xx) * | 1987-11-24 | 1993-08-26 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49124687U (xx) * | 1973-02-17 | 1974-10-25 | ||
| JPS52142288U (xx) * | 1977-04-11 | 1977-10-28 |
-
1985
- 1985-07-12 JP JP1985107026U patent/JPH0422888Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6215411U (xx) | 1987-01-29 |
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