JPS6233823Y2 - - Google Patents
Info
- Publication number
- JPS6233823Y2 JPS6233823Y2 JP7800882U JP7800882U JPS6233823Y2 JP S6233823 Y2 JPS6233823 Y2 JP S6233823Y2 JP 7800882 U JP7800882 U JP 7800882U JP 7800882 U JP7800882 U JP 7800882U JP S6233823 Y2 JPS6233823 Y2 JP S6233823Y2
- Authority
- JP
- Japan
- Prior art keywords
- axial direction
- chip
- bit body
- row
- chips
- 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 10
- 239000011435 rock Substances 0.000 claims description 7
- 230000005855 radiation Effects 0.000 claims 1
- 238000005452 bending Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7800882U JPS58180987U (ja) | 1982-05-26 | 1982-05-26 | さく溝用ビツト |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7800882U JPS58180987U (ja) | 1982-05-26 | 1982-05-26 | さく溝用ビツト |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58180987U JPS58180987U (ja) | 1983-12-02 |
| JPS6233823Y2 true JPS6233823Y2 (en, 2012) | 1987-08-29 |
Family
ID=30087252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7800882U Granted JPS58180987U (ja) | 1982-05-26 | 1982-05-26 | さく溝用ビツト |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58180987U (en, 2012) |
-
1982
- 1982-05-26 JP JP7800882U patent/JPS58180987U/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58180987U (ja) | 1983-12-02 |
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