JPH0539202Y2 - - Google Patents
Info
- Publication number
- JPH0539202Y2 JPH0539202Y2 JP1989142896U JP14289689U JPH0539202Y2 JP H0539202 Y2 JPH0539202 Y2 JP H0539202Y2 JP 1989142896 U JP1989142896 U JP 1989142896U JP 14289689 U JP14289689 U JP 14289689U JP H0539202 Y2 JPH0539202 Y2 JP H0539202Y2
- Authority
- JP
- Japan
- Prior art keywords
- time
- accumulator
- pressure
- gas pressure
- measuring device
- 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 - Lifetime
Links
- 239000010720 hydraulic oil Substances 0.000 claims description 19
- 238000005259 measurement Methods 0.000 claims description 18
- 239000003921 oil Substances 0.000 claims description 8
- 238000004092 self-diagnosis Methods 0.000 claims description 6
- 230000007423 decrease Effects 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989142896U JPH0539202Y2 (ko) | 1989-12-11 | 1989-12-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989142896U JPH0539202Y2 (ko) | 1989-12-11 | 1989-12-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0381401U JPH0381401U (ko) | 1991-08-20 |
| JPH0539202Y2 true JPH0539202Y2 (ko) | 1993-10-05 |
Family
ID=31689703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989142896U Expired - Lifetime JPH0539202Y2 (ko) | 1989-12-11 | 1989-12-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0539202Y2 (ko) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4982422B2 (ja) * | 2008-04-23 | 2012-07-25 | 日立建機株式会社 | アキュムレータのガス圧低下検出方法、及び検出装置 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4850308A (ko) * | 1971-10-25 | 1973-07-16 |
-
1989
- 1989-12-11 JP JP1989142896U patent/JPH0539202Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4850308A (ko) * | 1971-10-25 | 1973-07-16 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0381401U (ko) | 1991-08-20 |
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