FR919658A - Perfectionnements aux tarières de roche - Google Patents

Perfectionnements aux tarières de roche

Info

Publication number
FR919658A
FR919658A FR919658DA FR919658A FR 919658 A FR919658 A FR 919658A FR 919658D A FR919658D A FR 919658DA FR 919658 A FR919658 A FR 919658A
Authority
FR
France
Prior art keywords
rock auger
auger
rock
auger improvements
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)
Inventor
Leonard Padley
George Alfred Morgan
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.)
RIP BITS
Original Assignee
RIP BITS
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 RIP BITS filed Critical RIP BITS
Application granted granted Critical
Publication of FR919658A publication Critical patent/FR919658A/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
    • E21B17/042—Threaded
    • E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods

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)
FR919658D 1940-03-08 1946-01-02 Perfectionnements aux tarières de roche Expired FR919658A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB919658X 1940-03-08

Publications (1)

Publication Number Publication Date
FR919658A true FR919658A (fr) 1947-03-14

Family

ID=10707967

Family Applications (1)

Application Number Title Priority Date Filing Date
FR919658D Expired FR919658A (fr) 1940-03-08 1946-01-02 Perfectionnements aux tarières de roche

Country Status (1)

Country Link
FR (1) FR919658A (fr)

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