JPS62190781U - - Google Patents
Info
- Publication number
- JPS62190781U JPS62190781U JP7714486U JP7714486U JPS62190781U JP S62190781 U JPS62190781 U JP S62190781U JP 7714486 U JP7714486 U JP 7714486U JP 7714486 U JP7714486 U JP 7714486U JP S62190781 U JPS62190781 U JP S62190781U
- Authority
- JP
- Japan
- Prior art keywords
- hole
- preventing material
- roughening
- nozzle
- roughening preventing
- 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
- 238000007788 roughening Methods 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7714486U JPS62190781U (de) | 1986-05-22 | 1986-05-22 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7714486U JPS62190781U (de) | 1986-05-22 | 1986-05-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62190781U true JPS62190781U (de) | 1987-12-04 |
Family
ID=30924875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7714486U Pending JPS62190781U (de) | 1986-05-22 | 1986-05-22 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62190781U (de) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56119094A (en) * | 1980-02-25 | 1981-09-18 | Furukawa Kogyo Kk | Controller for water for flushing of drill |
JPS5998995A (ja) * | 1982-11-30 | 1984-06-07 | 川崎重工業株式会社 | 穿孔機の穿孔壁崩壊防止液体供給装置 |
-
1986
- 1986-05-22 JP JP7714486U patent/JPS62190781U/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56119094A (en) * | 1980-02-25 | 1981-09-18 | Furukawa Kogyo Kk | Controller for water for flushing of drill |
JPS5998995A (ja) * | 1982-11-30 | 1984-06-07 | 川崎重工業株式会社 | 穿孔機の穿孔壁崩壊防止液体供給装置 |