JPS63198682U - - Google Patents
Info
- Publication number
- JPS63198682U JPS63198682U JP8757087U JP8757087U JPS63198682U JP S63198682 U JPS63198682 U JP S63198682U JP 8757087 U JP8757087 U JP 8757087U JP 8757087 U JP8757087 U JP 8757087U JP S63198682 U JPS63198682 U JP S63198682U
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- pressure
- excavator
- adjustment valve
- adjusts
- 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.)
- Granted
Links
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 3
- 238000009412 basement excavation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987087570U JPH0447274Y2 (un) | 1987-06-08 | 1987-06-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987087570U JPH0447274Y2 (un) | 1987-06-08 | 1987-06-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63198682U true JPS63198682U (un) | 1988-12-21 |
| JPH0447274Y2 JPH0447274Y2 (un) | 1992-11-09 |
Family
ID=30944907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987087570U Expired JPH0447274Y2 (un) | 1987-06-08 | 1987-06-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0447274Y2 (un) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4979003U (un) * | 1972-10-23 | 1974-07-09 | ||
| JPS6153996A (ja) * | 1984-08-21 | 1986-03-18 | 日立建機株式会社 | アースドリルにおける掘削作動制御方法 |
| JPS6153995A (ja) * | 1984-08-21 | 1986-03-18 | 日立建機株式会社 | ア−スドリルにおける制御装置 |
| JPS6168161U (un) * | 1984-10-11 | 1986-05-10 |
-
1987
- 1987-06-08 JP JP1987087570U patent/JPH0447274Y2/ja not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4979003U (un) * | 1972-10-23 | 1974-07-09 | ||
| JPS6153996A (ja) * | 1984-08-21 | 1986-03-18 | 日立建機株式会社 | アースドリルにおける掘削作動制御方法 |
| JPS6153995A (ja) * | 1984-08-21 | 1986-03-18 | 日立建機株式会社 | ア−スドリルにおける制御装置 |
| JPS6168161U (un) * | 1984-10-11 | 1986-05-10 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0447274Y2 (un) | 1992-11-09 |
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