CH138263A - Equipment on rock drilling machines for extracting the drilling dust by means of a hollow drill. - Google Patents
Equipment on rock drilling machines for extracting the drilling dust by means of a hollow drill.Info
- Publication number
- CH138263A CH138263A CH138263DA CH138263A CH 138263 A CH138263 A CH 138263A CH 138263D A CH138263D A CH 138263DA CH 138263 A CH138263 A CH 138263A
- Authority
- CH
- Switzerland
- Prior art keywords
- extracting
- equipment
- hollow drill
- drilling
- dust
- Prior art date
Links
- 238000005553 drilling Methods 0.000 title 2
- 239000000428 dust Substances 0.000 title 1
- 239000011435 rock Substances 0.000 title 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH138263T | 1929-02-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH138263A true CH138263A (en) | 1930-02-28 |
Family
ID=4395649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH138263D CH138263A (en) | 1929-02-07 | 1929-02-07 | Equipment on rock drilling machines for extracting the drilling dust by means of a hollow drill. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH138263A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990002244A1 (en) * | 1987-02-19 | 1990-03-08 | Schagerstroem Tonie | A drill for rock and concrete |
-
1929
- 1929-02-07 CH CH138263D patent/CH138263A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990002244A1 (en) * | 1987-02-19 | 1990-03-08 | Schagerstroem Tonie | A drill for rock and concrete |
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