JPS6141502Y2 - - Google Patents
Info
- Publication number
- JPS6141502Y2 JPS6141502Y2 JP16891380U JP16891380U JPS6141502Y2 JP S6141502 Y2 JPS6141502 Y2 JP S6141502Y2 JP 16891380 U JP16891380 U JP 16891380U JP 16891380 U JP16891380 U JP 16891380U JP S6141502 Y2 JPS6141502 Y2 JP S6141502Y2
- Authority
- JP
- Japan
- Prior art keywords
- control valve
- valve
- state
- boom
- danger
- 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
- 238000001514 detection method Methods 0.000 claims description 14
- 230000007935 neutral effect Effects 0.000 claims description 8
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000007423 decrease Effects 0.000 description 7
- 239000003921 oil Substances 0.000 description 7
- 230000008602 contraction Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Preventing Unauthorised Actuation Of Valves (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16891380U JPS6141502Y2 (enrdf_load_stackoverflow) | 1980-11-25 | 1980-11-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16891380U JPS6141502Y2 (enrdf_load_stackoverflow) | 1980-11-25 | 1980-11-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5790978U JPS5790978U (enrdf_load_stackoverflow) | 1982-06-04 |
| JPS6141502Y2 true JPS6141502Y2 (enrdf_load_stackoverflow) | 1986-11-26 |
Family
ID=29527457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16891380U Expired JPS6141502Y2 (enrdf_load_stackoverflow) | 1980-11-25 | 1980-11-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6141502Y2 (enrdf_load_stackoverflow) |
-
1980
- 1980-11-25 JP JP16891380U patent/JPS6141502Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5790978U (enrdf_load_stackoverflow) | 1982-06-04 |
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