JPH0393896U - - Google Patents
Info
- Publication number
- JPH0393896U JPH0393896U JP11161290U JP11161290U JPH0393896U JP H0393896 U JPH0393896 U JP H0393896U JP 11161290 U JP11161290 U JP 11161290U JP 11161290 U JP11161290 U JP 11161290U JP H0393896 U JPH0393896 U JP H0393896U
- Authority
- JP
- Japan
- Prior art keywords
- casing
- drilling blade
- casing pipe
- bolt
- detaching
- 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
- 238000005553 drilling Methods 0.000 claims description 3
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990111612U JPH0415826Y2 (enEXAMPLES) | 1990-10-26 | 1990-10-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990111612U JPH0415826Y2 (enEXAMPLES) | 1990-10-26 | 1990-10-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0393896U true JPH0393896U (enEXAMPLES) | 1991-09-25 |
| JPH0415826Y2 JPH0415826Y2 (enEXAMPLES) | 1992-04-09 |
Family
ID=31660084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990111612U Expired JPH0415826Y2 (enEXAMPLES) | 1990-10-26 | 1990-10-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0415826Y2 (enEXAMPLES) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4521086Y1 (enEXAMPLES) * | 1967-02-16 | 1970-08-22 | ||
| JPS50115702U (enEXAMPLES) * | 1974-03-04 | 1975-09-20 | ||
| US3999620A (en) * | 1975-05-30 | 1976-12-28 | Watson, Incorporated | Core barrel |
| JPS54141101U (enEXAMPLES) * | 1978-03-25 | 1979-10-01 | ||
| JPS56119030A (en) * | 1980-02-23 | 1981-09-18 | Hajime Matsuzawa | Performance of work for placing an embedded pile and device for carrying out the said performance |
| JPS58115592U (ja) * | 1982-02-01 | 1983-08-06 | 日本タングステン株式会社 | 岩掘削カツタ−装置用カツタ−ビツト |
-
1990
- 1990-10-26 JP JP1990111612U patent/JPH0415826Y2/ja not_active Expired
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4521086Y1 (enEXAMPLES) * | 1967-02-16 | 1970-08-22 | ||
| JPS50115702U (enEXAMPLES) * | 1974-03-04 | 1975-09-20 | ||
| US3999620A (en) * | 1975-05-30 | 1976-12-28 | Watson, Incorporated | Core barrel |
| JPS54141101U (enEXAMPLES) * | 1978-03-25 | 1979-10-01 | ||
| JPS56119030A (en) * | 1980-02-23 | 1981-09-18 | Hajime Matsuzawa | Performance of work for placing an embedded pile and device for carrying out the said performance |
| JPS58115592U (ja) * | 1982-02-01 | 1983-08-06 | 日本タングステン株式会社 | 岩掘削カツタ−装置用カツタ−ビツト |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0415826Y2 (enEXAMPLES) | 1992-04-09 |