JPH02120589U - - Google Patents
Info
- Publication number
- JPH02120589U JPH02120589U JP2709989U JP2709989U JPH02120589U JP H02120589 U JPH02120589 U JP H02120589U JP 2709989 U JP2709989 U JP 2709989U JP 2709989 U JP2709989 U JP 2709989U JP H02120589 U JPH02120589 U JP H02120589U
- Authority
- JP
- Japan
- Prior art keywords
- tip
- tube
- bearing block
- rotatable
- axial direction
- 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 2
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2709989U JPH069108Y2 (ja) | 1989-03-09 | 1989-03-09 | 穿孔機の方向制御装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2709989U JPH069108Y2 (ja) | 1989-03-09 | 1989-03-09 | 穿孔機の方向制御装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02120589U true JPH02120589U (ko) | 1990-09-28 |
| JPH069108Y2 JPH069108Y2 (ja) | 1994-03-09 |
Family
ID=31249313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2709989U Expired - Lifetime JPH069108Y2 (ja) | 1989-03-09 | 1989-03-09 | 穿孔機の方向制御装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH069108Y2 (ko) |
-
1989
- 1989-03-09 JP JP2709989U patent/JPH069108Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH069108Y2 (ja) | 1994-03-09 |