FR379956A - Improvements to electro-pneumatic percussion drills - Google Patents

Improvements to electro-pneumatic percussion drills

Info

Publication number
FR379956A
FR379956A FR379956A FR379956DA FR379956A FR 379956 A FR379956 A FR 379956A FR 379956 A FR379956 A FR 379956A FR 379956D A FR379956D A FR 379956DA FR 379956 A FR379956 A FR 379956A
Authority
FR
France
Prior art keywords
electro
pneumatic percussion
percussion drills
drills
pneumatic
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
Application number
FR379956A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ingersoll Rand Co filed Critical Ingersoll Rand Co
Application granted granted Critical
Publication of FR379956A publication Critical patent/FR379956A/en
Expired legal-status Critical Current

Links

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
    • E21B1/00—Percussion drilling
    • E21B1/12—Percussion drilling with a reciprocating impulse member
    • E21B1/24—Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure
    • E21B1/30—Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure by air, steam or gas pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (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)
FR379956A 1907-07-16 1907-07-16 Improvements to electro-pneumatic percussion drills Expired FR379956A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR379956T 1907-07-16

Publications (1)

Publication Number Publication Date
FR379956A true FR379956A (en) 1907-11-26

Family

ID=1426205

Family Applications (1)

Application Number Title Priority Date Filing Date
FR379956A Expired FR379956A (en) 1907-07-16 1907-07-16 Improvements to electro-pneumatic percussion drills

Country Status (1)

Country Link
FR (1) FR379956A (en)

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