JPH02145282U - - Google Patents
Info
- Publication number
- JPH02145282U JPH02145282U JP5505689U JP5505689U JPH02145282U JP H02145282 U JPH02145282 U JP H02145282U JP 5505689 U JP5505689 U JP 5505689U JP 5505689 U JP5505689 U JP 5505689U JP H02145282 U JPH02145282 U JP H02145282U
- Authority
- JP
- Japan
- Prior art keywords
- outer pipe
- iron core
- inverted
- pipe
- center pole
- 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
Landscapes
- Earth Drilling (AREA)
- Load-Engaging Elements For Cranes (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5505689U JPH0738306Y2 (ja) | 1989-05-12 | 1989-05-12 | 二重管用チャッキング装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5505689U JPH0738306Y2 (ja) | 1989-05-12 | 1989-05-12 | 二重管用チャッキング装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02145282U true JPH02145282U (enExample) | 1990-12-10 |
| JPH0738306Y2 JPH0738306Y2 (ja) | 1995-08-30 |
Family
ID=31577669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5505689U Expired - Lifetime JPH0738306Y2 (ja) | 1989-05-12 | 1989-05-12 | 二重管用チャッキング装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0738306Y2 (enExample) |
-
1989
- 1989-05-12 JP JP5505689U patent/JPH0738306Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0738306Y2 (ja) | 1995-08-30 |