FR1020588A - Perfectionnement aux trépans pour la roche - Google Patents

Perfectionnement aux trépans pour la roche

Info

Publication number
FR1020588A
FR1020588A FR1020588DA FR1020588A FR 1020588 A FR1020588 A FR 1020588A FR 1020588D A FR1020588D A FR 1020588DA FR 1020588 A FR1020588 A FR 1020588A
Authority
FR
France
Prior art keywords
drill bits
rock drill
advanced
advanced rock
bits
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
English (en)
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.)
Timken Co
Original Assignee
Timken Roller Bearing 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 Timken Roller Bearing Co filed Critical Timken Roller Bearing Co
Application granted granted Critical
Publication of FR1020588A publication Critical patent/FR1020588A/fr
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

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)
FR1020588D 1950-03-08 1950-06-20 Perfectionnement aux trépans pour la roche Expired FR1020588A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1020588XA 1950-03-08 1950-03-08

Publications (1)

Publication Number Publication Date
FR1020588A true FR1020588A (fr) 1953-02-09

Family

ID=22287896

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1020588D Expired FR1020588A (fr) 1950-03-08 1950-06-20 Perfectionnement aux trépans pour la roche

Country Status (1)

Country Link
FR (1) FR1020588A (fr)

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