JPH01105689U - - Google Patents
Info
- Publication number
- JPH01105689U JPH01105689U JP20083787U JP20083787U JPH01105689U JP H01105689 U JPH01105689 U JP H01105689U JP 20083787 U JP20083787 U JP 20083787U JP 20083787 U JP20083787 U JP 20083787U JP H01105689 U JPH01105689 U JP H01105689U
- Authority
- JP
- Japan
- Prior art keywords
- bar
- kelly bar
- joint part
- pin joint
- earth drill
- 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.)
- Pending
Links
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20083787U JPH01105689U (fr) | 1987-12-30 | 1987-12-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20083787U JPH01105689U (fr) | 1987-12-30 | 1987-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01105689U true JPH01105689U (fr) | 1989-07-17 |
Family
ID=31491226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20083787U Pending JPH01105689U (fr) | 1987-12-30 | 1987-12-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01105689U (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0798444A1 (fr) * | 1990-06-12 | 1997-10-01 | Hitachi Construction Machinery Co., Ltd. | Tige d'entrainement cylindrique telescopique |
-
1987
- 1987-12-30 JP JP20083787U patent/JPH01105689U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0798444A1 (fr) * | 1990-06-12 | 1997-10-01 | Hitachi Construction Machinery Co., Ltd. | Tige d'entrainement cylindrique telescopique |