JPH0242792Y2 - - Google Patents
Info
- Publication number
- JPH0242792Y2 JPH0242792Y2 JP1985046938U JP4693885U JPH0242792Y2 JP H0242792 Y2 JPH0242792 Y2 JP H0242792Y2 JP 1985046938 U JP1985046938 U JP 1985046938U JP 4693885 U JP4693885 U JP 4693885U JP H0242792 Y2 JPH0242792 Y2 JP H0242792Y2
- Authority
- JP
- Japan
- Prior art keywords
- bit
- bit body
- pilot part
- diameter
- pilot
- 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
- 230000004323 axial length Effects 0.000 claims description 4
- 238000005553 drilling Methods 0.000 description 7
- 239000011435 rock Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000010953 base metal Substances 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985046938U JPH0242792Y2 (US20030199744A1-20031023-C00003.png) | 1985-03-30 | 1985-03-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985046938U JPH0242792Y2 (US20030199744A1-20031023-C00003.png) | 1985-03-30 | 1985-03-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61164387U JPS61164387U (US20030199744A1-20031023-C00003.png) | 1986-10-11 |
| JPH0242792Y2 true JPH0242792Y2 (US20030199744A1-20031023-C00003.png) | 1990-11-14 |
Family
ID=30561801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985046938U Expired JPH0242792Y2 (US20030199744A1-20031023-C00003.png) | 1985-03-30 | 1985-03-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0242792Y2 (US20030199744A1-20031023-C00003.png) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009019463A (ja) * | 2007-07-13 | 2009-01-29 | Okumura Corp | ガイドロッド付き穿孔装置 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58151407A (ja) * | 1982-03-03 | 1983-09-08 | Kawasaki Steel Corp | 高炉出銑口座ぐり用ビツト |
-
1985
- 1985-03-30 JP JP1985046938U patent/JPH0242792Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58151407A (ja) * | 1982-03-03 | 1983-09-08 | Kawasaki Steel Corp | 高炉出銑口座ぐり用ビツト |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61164387U (US20030199744A1-20031023-C00003.png) | 1986-10-11 |
