JPS62176283U - - Google Patents
Info
- Publication number
- JPS62176283U JPS62176283U JP6249186U JP6249186U JPS62176283U JP S62176283 U JPS62176283 U JP S62176283U JP 6249186 U JP6249186 U JP 6249186U JP 6249186 U JP6249186 U JP 6249186U JP S62176283 U JPS62176283 U JP S62176283U
- Authority
- JP
- Japan
- Prior art keywords
- boom
- cylinder
- drive device
- rotation drive
- kelly bar
- 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
- 238000009412 basement excavation Methods 0.000 claims 1
- 238000005553 drilling Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986062491U JPH0447275Y2 (fr) | 1986-04-24 | 1986-04-24 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986062491U JPH0447275Y2 (fr) | 1986-04-24 | 1986-04-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS62176283U true JPS62176283U (fr) | 1987-11-09 |
JPH0447275Y2 JPH0447275Y2 (fr) | 1992-11-09 |
Family
ID=30896820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1986062491U Expired JPH0447275Y2 (fr) | 1986-04-24 | 1986-04-24 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0447275Y2 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02116583U (fr) * | 1989-03-06 | 1990-09-18 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5663281U (fr) * | 1979-10-18 | 1981-05-28 |
-
1986
- 1986-04-24 JP JP1986062491U patent/JPH0447275Y2/ja not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5663281U (fr) * | 1979-10-18 | 1981-05-28 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02116583U (fr) * | 1989-03-06 | 1990-09-18 |
Also Published As
Publication number | Publication date |
---|---|
JPH0447275Y2 (fr) | 1992-11-09 |
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