JPS6131717B2 - - Google Patents
Info
- Publication number
- JPS6131717B2 JPS6131717B2 JP3146180A JP3146180A JPS6131717B2 JP S6131717 B2 JPS6131717 B2 JP S6131717B2 JP 3146180 A JP3146180 A JP 3146180A JP 3146180 A JP3146180 A JP 3146180A JP S6131717 B2 JPS6131717 B2 JP S6131717B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- boom
- pilot
- cylinder device
- oil chamber
- 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
- 230000008602 contraction Effects 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 130
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 101100127891 Caenorhabditis elegans let-4 gene Proteins 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
Landscapes
- Jib Cranes (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3146180A JPS56127595A (en) | 1980-03-11 | 1980-03-11 | Expansion device for three stage boom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3146180A JPS56127595A (en) | 1980-03-11 | 1980-03-11 | Expansion device for three stage boom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56127595A JPS56127595A (en) | 1981-10-06 |
| JPS6131717B2 true JPS6131717B2 (en:Method) | 1986-07-22 |
Family
ID=12331895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3146180A Granted JPS56127595A (en) | 1980-03-11 | 1980-03-11 | Expansion device for three stage boom |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56127595A (en:Method) |
-
1980
- 1980-03-11 JP JP3146180A patent/JPS56127595A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56127595A (en) | 1981-10-06 |
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