JPH0455110Y2 - - Google Patents
Info
- Publication number
- JPH0455110Y2 JPH0455110Y2 JP3432786U JP3432786U JPH0455110Y2 JP H0455110 Y2 JPH0455110 Y2 JP H0455110Y2 JP 3432786 U JP3432786 U JP 3432786U JP 3432786 U JP3432786 U JP 3432786U JP H0455110 Y2 JPH0455110 Y2 JP H0455110Y2
- Authority
- JP
- Japan
- Prior art keywords
- leader
- bar
- kelly
- kelly bar
- sheave block
- 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
- 238000009412 basement excavation Methods 0.000 description 8
- 238000005553 drilling Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000008602 contraction Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3432786U JPH0455110Y2 (US06826419-20041130-M00005.png) | 1986-03-10 | 1986-03-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3432786U JPH0455110Y2 (US06826419-20041130-M00005.png) | 1986-03-10 | 1986-03-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62148693U JPS62148693U (US06826419-20041130-M00005.png) | 1987-09-19 |
| JPH0455110Y2 true JPH0455110Y2 (US06826419-20041130-M00005.png) | 1992-12-24 |
Family
ID=30842768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3432786U Expired JPH0455110Y2 (US06826419-20041130-M00005.png) | 1986-03-10 | 1986-03-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0455110Y2 (US06826419-20041130-M00005.png) |
-
1986
- 1986-03-10 JP JP3432786U patent/JPH0455110Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62148693U (US06826419-20041130-M00005.png) | 1987-09-19 |
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