JPS62190779U - - Google Patents
Info
- Publication number
- JPS62190779U JPS62190779U JP7620486U JP7620486U JPS62190779U JP S62190779 U JPS62190779 U JP S62190779U JP 7620486 U JP7620486 U JP 7620486U JP 7620486 U JP7620486 U JP 7620486U JP S62190779 U JPS62190779 U JP S62190779U
- Authority
- JP
- Japan
- Prior art keywords
- bit
- view
- gravel
- showing
- state
- 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.)
- Granted
Links
- 238000005553 drilling Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims 2
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7620486U JPH0316954Y2 (US07541385-20090602-C00001.png) | 1986-05-22 | 1986-05-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7620486U JPH0316954Y2 (US07541385-20090602-C00001.png) | 1986-05-22 | 1986-05-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62190779U true JPS62190779U (US07541385-20090602-C00001.png) | 1987-12-04 |
| JPH0316954Y2 JPH0316954Y2 (US07541385-20090602-C00001.png) | 1991-04-10 |
Family
ID=30923062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7620486U Expired JPH0316954Y2 (US07541385-20090602-C00001.png) | 1986-05-22 | 1986-05-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0316954Y2 (US07541385-20090602-C00001.png) |
-
1986
- 1986-05-22 JP JP7620486U patent/JPH0316954Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0316954Y2 (US07541385-20090602-C00001.png) | 1991-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4116572B2 (ja) | 打撃ドリルビットおよび打撃ドリルビット用ボタン | |
| JPS62190779U (US07541385-20090602-C00001.png) | ||
| JPS60181434U (ja) | 基礎杭 | |
| US6655480B1 (en) | Cutting insert for percussion drill bit | |
| JP3726179B2 (ja) | さく孔装置 | |
| US5366032A (en) | Rock bit | |
| JPH01280195A (ja) | 穿孔用ビット | |
| JP2527622Y2 (ja) | ロックビット | |
| JPS6132288U (ja) | 地中への管挿入用ビツト | |
| JP2527621Y2 (ja) | ロックビット | |
| JP2525977Y2 (ja) | ロックビット | |
| US7163070B2 (en) | Drill head | |
| JPH0732622Y2 (ja) | 二重管式掘削工具 | |
| JPS5973487U (ja) | 拡径孔さく孔装置 | |
| JPS61206789U (US07541385-20090602-C00001.png) | ||
| JPH0379387U (US07541385-20090602-C00001.png) | ||
| JP2578078B2 (ja) | 穿孔ビット | |
| JPS58194299U (ja) | トンネル施工用ロツクボルト構造 | |
| JP2546806Y2 (ja) | 穿孔ビット | |
| JP2002081287A (ja) | 複合ビット | |
| JPS6386913U (US07541385-20090602-C00001.png) | ||
| JP2002061484A (ja) | アウタビット | |
| JPS58176191U (ja) | さく岩機のシヤンクロツド | |
| JPS6168814U (US07541385-20090602-C00001.png) | ||
| JPH0522684U (ja) | 穿孔用ビツト |
