JPH0735909Y2 - アースドリルのケリーバ - Google Patents
アースドリルのケリーバInfo
- Publication number
- JPH0735909Y2 JPH0735909Y2 JP1990400984U JP40098490U JPH0735909Y2 JP H0735909 Y2 JPH0735909 Y2 JP H0735909Y2 JP 1990400984 U JP1990400984 U JP 1990400984U JP 40098490 U JP40098490 U JP 40098490U JP H0735909 Y2 JPH0735909 Y2 JP H0735909Y2
- Authority
- JP
- Japan
- Prior art keywords
- kelly bar
- kelly
- bar
- cushioning material
- 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.)
- Expired - Fee Related
Links
- 239000000463 material Substances 0.000 claims description 14
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 229920003002 synthetic resin Polymers 0.000 claims description 4
- 239000000057 synthetic resin Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000011359 shock absorbing material Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990400984U JPH0735909Y2 (ja) | 1990-12-19 | 1990-12-19 | アースドリルのケリーバ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990400984U JPH0735909Y2 (ja) | 1990-12-19 | 1990-12-19 | アースドリルのケリーバ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0492091U JPH0492091U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1992-08-11 |
| JPH0735909Y2 true JPH0735909Y2 (ja) | 1995-08-16 |
Family
ID=31879147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990400984U Expired - Fee Related JPH0735909Y2 (ja) | 1990-12-19 | 1990-12-19 | アースドリルのケリーバ |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0735909Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH057354Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1987-12-21 | 1993-02-24 |
-
1990
- 1990-12-19 JP JP1990400984U patent/JPH0735909Y2/ja not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0492091U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1992-08-11 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |