JPS6241108Y2 - - Google Patents
Info
- Publication number
- JPS6241108Y2 JPS6241108Y2 JP19166882U JP19166882U JPS6241108Y2 JP S6241108 Y2 JPS6241108 Y2 JP S6241108Y2 JP 19166882 U JP19166882 U JP 19166882U JP 19166882 U JP19166882 U JP 19166882U JP S6241108 Y2 JPS6241108 Y2 JP S6241108Y2
- Authority
- JP
- Japan
- Prior art keywords
- bit
- main body
- drill
- conical surface
- spiral
- 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 13
- 239000002689 soil Substances 0.000 description 5
- 239000011435 rock Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19166882U JPS5998983U (ja) | 1982-12-16 | 1982-12-16 | ドリルによる土中穿孔ビツト |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19166882U JPS5998983U (ja) | 1982-12-16 | 1982-12-16 | ドリルによる土中穿孔ビツト |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5998983U JPS5998983U (ja) | 1984-07-04 |
| JPS6241108Y2 true JPS6241108Y2 (es) | 1987-10-21 |
Family
ID=30412685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19166882U Granted JPS5998983U (ja) | 1982-12-16 | 1982-12-16 | ドリルによる土中穿孔ビツト |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5998983U (es) |
-
1982
- 1982-12-16 JP JP19166882U patent/JPS5998983U/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5998983U (ja) | 1984-07-04 |
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