JPH0447277Y2 - - Google Patents
Info
- Publication number
- JPH0447277Y2 JPH0447277Y2 JP16495888U JP16495888U JPH0447277Y2 JP H0447277 Y2 JPH0447277 Y2 JP H0447277Y2 JP 16495888 U JP16495888 U JP 16495888U JP 16495888 U JP16495888 U JP 16495888U JP H0447277 Y2 JPH0447277 Y2 JP H0447277Y2
- Authority
- JP
- Japan
- Prior art keywords
- mast
- lower half
- cable
- boom
- cylinder
- 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
- 238000009412 basement excavation Methods 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16495888U JPH0447277Y2 (el) | 1988-12-19 | 1988-12-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16495888U JPH0447277Y2 (el) | 1988-12-19 | 1988-12-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0284890U JPH0284890U (el) | 1990-07-02 |
| JPH0447277Y2 true JPH0447277Y2 (el) | 1992-11-09 |
Family
ID=31451017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16495888U Expired JPH0447277Y2 (el) | 1988-12-19 | 1988-12-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0447277Y2 (el) |
-
1988
- 1988-12-19 JP JP16495888U patent/JPH0447277Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0284890U (el) | 1990-07-02 |
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