FR394285A - Perfectionnements apportés aux perforatrices à percussion - Google Patents
Perfectionnements apportés aux perforatrices à percussionInfo
- Publication number
- FR394285A FR394285A FR394285DA FR394285A FR 394285 A FR394285 A FR 394285A FR 394285D A FR394285D A FR 394285DA FR 394285 A FR394285 A FR 394285A
- Authority
- FR
- France
- Prior art keywords
- percussion drills
- percussion
- drills
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/086—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder
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 |
---|---|---|---|
FR394285T | 1908-09-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR394285A true FR394285A (fr) | 1909-01-19 |
Family
ID=1439538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR394285D Expired FR394285A (fr) | 1908-09-15 | 1908-09-15 | Perfectionnements apportés aux perforatrices à percussion |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR394285A (fr) |
-
1908
- 1908-09-15 FR FR394285D patent/FR394285A/fr not_active Expired
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