JPS63141283U - - Google Patents
Info
- Publication number
- JPS63141283U JPS63141283U JP3312687U JP3312687U JPS63141283U JP S63141283 U JPS63141283 U JP S63141283U JP 3312687 U JP3312687 U JP 3312687U JP 3312687 U JP3312687 U JP 3312687U JP S63141283 U JPS63141283 U JP S63141283U
- Authority
- JP
- Japan
- Prior art keywords
- work state
- automatic stop
- switch
- prevention device
- earth drill
- 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
- 230000002265 prevention Effects 0.000 claims 4
- 238000009412 basement excavation Methods 0.000 claims 3
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3312687U JPH0447273Y2 (uk) | 1987-03-09 | 1987-03-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3312687U JPH0447273Y2 (uk) | 1987-03-09 | 1987-03-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63141283U true JPS63141283U (uk) | 1988-09-16 |
| JPH0447273Y2 JPH0447273Y2 (uk) | 1992-11-09 |
Family
ID=30840443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3312687U Expired JPH0447273Y2 (uk) | 1987-03-09 | 1987-03-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0447273Y2 (uk) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4762212B2 (ja) * | 2007-08-20 | 2011-08-31 | 日本車輌製造株式会社 | アースドリル |
-
1987
- 1987-03-09 JP JP3312687U patent/JPH0447273Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0447273Y2 (uk) | 1992-11-09 |