FR1230070A - Percussion hammer drill - Google Patents
Percussion hammer drillInfo
- Publication number
- FR1230070A FR1230070A FR794907A FR794907A FR1230070A FR 1230070 A FR1230070 A FR 1230070A FR 794907 A FR794907 A FR 794907A FR 794907 A FR794907 A FR 794907A FR 1230070 A FR1230070 A FR 1230070A
- Authority
- FR
- France
- Prior art keywords
- hammer drill
- percussion hammer
- percussion
- drill
- hammer
- 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.)
- Expired
Links
- 238000009527 percussion Methods 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
- E21B6/00—Drives for drilling with combined rotary and percussive action
- E21B6/06—Drives for drilling with combined rotary and percussive action the rotation being intermittent, e.g. obtained by ratchet device
- E21B6/08—Separate drives for percussion and rotation
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (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 |
---|---|---|---|
DE1230070X | 1958-05-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1230070A true FR1230070A (en) | 1960-09-13 |
Family
ID=7734895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR794907A Expired FR1230070A (en) | 1958-05-19 | 1959-05-19 | Percussion hammer drill |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1230070A (en) |
-
1959
- 1959-05-19 FR FR794907A patent/FR1230070A/en not_active Expired
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