FR687261A - Drill bit for impact drills - Google Patents

Drill bit for impact drills

Info

Publication number
FR687261A
FR687261A FR687261DA FR687261A FR 687261 A FR687261 A FR 687261A FR 687261D A FR687261D A FR 687261DA FR 687261 A FR687261 A FR 687261A
Authority
FR
France
Prior art keywords
drill bit
impact drills
drills
impact
drill
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
Other languages
French (fr)
Inventor
Hans Walser
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 filed Critical
Application granted granted Critical
Publication of FR687261A publication Critical patent/FR687261A/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
    • E21B17/042—Threaded

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)
FR687261D 1929-12-26 1929-12-26 Drill bit for impact drills Expired FR687261A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR687261T 1929-12-26

Publications (1)

Publication Number Publication Date
FR687261A true FR687261A (en) 1930-08-06

Family

ID=9026033

Family Applications (1)

Application Number Title Priority Date Filing Date
FR687261D Expired FR687261A (en) 1929-12-26 1929-12-26 Drill bit for impact drills

Country Status (1)

Country Link
FR (1) FR687261A (en)

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