FR332231A - Coupling device for twist drills - Google Patents

Coupling device for twist drills

Info

Publication number
FR332231A
FR332231A FR332231A FR332231DA FR332231A FR 332231 A FR332231 A FR 332231A FR 332231 A FR332231 A FR 332231A FR 332231D A FR332231D A FR 332231DA FR 332231 A FR332231 A FR 332231A
Authority
FR
France
Prior art keywords
coupling device
twist drills
drills
twist
coupling
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
FR332231A
Other languages
French (fr)
Inventor
Carl Bertenburg
Charles Christiansen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR332231A publication Critical patent/FR332231A/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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/22—Rods or pipes with helical structure

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)
FR332231A 1903-05-19 1903-05-19 Coupling device for twist drills Expired FR332231A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR332231T 1903-05-19

Publications (1)

Publication Number Publication Date
FR332231A true FR332231A (en) 1903-10-19

Family

ID=1381895

Family Applications (1)

Application Number Title Priority Date Filing Date
FR332231A Expired FR332231A (en) 1903-05-19 1903-05-19 Coupling device for twist drills

Country Status (1)

Country Link
FR (1) FR332231A (en)

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