JPH01156246U - - Google Patents
Info
- Publication number
- JPH01156246U JPH01156246U JP4910188U JP4910188U JPH01156246U JP H01156246 U JPH01156246 U JP H01156246U JP 4910188 U JP4910188 U JP 4910188U JP 4910188 U JP4910188 U JP 4910188U JP H01156246 U JPH01156246 U JP H01156246U
- Authority
- JP
- Japan
- Prior art keywords
- boom
- arm
- sliding member
- retracted
- tip
- 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
- 238000010586 diagram Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4910188U JPH01156246U (en]) | 1988-04-12 | 1988-04-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4910188U JPH01156246U (en]) | 1988-04-12 | 1988-04-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01156246U true JPH01156246U (en]) | 1989-10-26 |
Family
ID=31275219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4910188U Pending JPH01156246U (en]) | 1988-04-12 | 1988-04-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01156246U (en]) |
-
1988
- 1988-04-12 JP JP4910188U patent/JPH01156246U/ja active Pending