JPH0450494U - - Google Patents
Info
- Publication number
- JPH0450494U JPH0450494U JP8991090U JP8991090U JPH0450494U JP H0450494 U JPH0450494 U JP H0450494U JP 8991090 U JP8991090 U JP 8991090U JP 8991090 U JP8991090 U JP 8991090U JP H0450494 U JPH0450494 U JP H0450494U
- Authority
- JP
- Japan
- Prior art keywords
- rod
- drilled hole
- diameter
- fluid passage
- pipe
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 5
- 238000004033 diameter control Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8991090U JPH0450494U (fr) | 1990-08-27 | 1990-08-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8991090U JPH0450494U (fr) | 1990-08-27 | 1990-08-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0450494U true JPH0450494U (fr) | 1992-04-28 |
Family
ID=31824231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8991090U Pending JPH0450494U (fr) | 1990-08-27 | 1990-08-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0450494U (fr) |
-
1990
- 1990-08-27 JP JP8991090U patent/JPH0450494U/ja active Pending