FR867860A - Percussion device with ram set in motion under the interposition of a spring - Google Patents
Percussion device with ram set in motion under the interposition of a springInfo
- Publication number
- FR867860A FR867860A FR867860DA FR867860A FR 867860 A FR867860 A FR 867860A FR 867860D A FR867860D A FR 867860DA FR 867860 A FR867860 A FR 867860A
- Authority
- FR
- France
- Prior art keywords
- interposition
- spring
- motion under
- percussion device
- ram set
- 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
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 |
---|---|---|---|
DE867860X | 1938-09-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR867860A true FR867860A (en) | 1941-12-02 |
Family
ID=6802222
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR867860D Expired FR867860A (en) | 1938-09-28 | 1940-11-30 | Percussion device with ram set in motion under the interposition of a spring |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR867860A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE968031C (en) * | 1953-04-30 | 1958-01-09 | Hwf Hartmetall Werkzeug Fabrik | Vibration rotary drilling machine for hard rock or the like with a drill rod set in vibration by a crank drive with the interposition of springs |
-
1940
- 1940-11-30 FR FR867860D patent/FR867860A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE968031C (en) * | 1953-04-30 | 1958-01-09 | Hwf Hartmetall Werkzeug Fabrik | Vibration rotary drilling machine for hard rock or the like with a drill rod set in vibration by a crank drive with the interposition of springs |
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