JPS6419691U - - Google Patents
Info
- Publication number
- JPS6419691U JPS6419691U JP11128487U JP11128487U JPS6419691U JP S6419691 U JPS6419691 U JP S6419691U JP 11128487 U JP11128487 U JP 11128487U JP 11128487 U JP11128487 U JP 11128487U JP S6419691 U JPS6419691 U JP S6419691U
- Authority
- JP
- Japan
- Prior art keywords
- bit
- shaft
- expanding
- drilling bit
- shaft hole
- 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
- 238000005553 drilling Methods 0.000 claims description 6
- 238000009412 basement excavation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11128487U JPS6419691U (da) | 1987-07-22 | 1987-07-22 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11128487U JPS6419691U (da) | 1987-07-22 | 1987-07-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6419691U true JPS6419691U (da) | 1989-01-31 |
Family
ID=31349194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11128487U Pending JPS6419691U (da) | 1987-07-22 | 1987-07-22 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6419691U (da) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6055198B2 (ja) * | 1977-10-27 | 1985-12-04 | 正 新見 | 汚水の処理兼脱窒方法 |
JPS6145085A (ja) * | 1984-08-06 | 1986-03-04 | 井上 八郎 | ア−スドリル工法に用いる拡底掘削バケツトと拡底掘削工法 |
-
1987
- 1987-07-22 JP JP11128487U patent/JPS6419691U/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6055198B2 (ja) * | 1977-10-27 | 1985-12-04 | 正 新見 | 汚水の処理兼脱窒方法 |
JPS6145085A (ja) * | 1984-08-06 | 1986-03-04 | 井上 八郎 | ア−スドリル工法に用いる拡底掘削バケツトと拡底掘削工法 |
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