FR1053400A - Twist drill for drilling rocks - Google Patents

Twist drill for drilling rocks

Info

Publication number
FR1053400A
FR1053400A FR1053400DA FR1053400A FR 1053400 A FR1053400 A FR 1053400A FR 1053400D A FR1053400D A FR 1053400DA FR 1053400 A FR1053400 A FR 1053400A
Authority
FR
France
Prior art keywords
twist drill
drilling rocks
rocks
drilling
twist
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
Albert Tschan
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 FR1053400A publication Critical patent/FR1053400A/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
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts

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)
FR1053400D 1952-04-04 1952-04-04 Twist drill for drilling rocks Expired FR1053400A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1053400T 1952-04-04

Publications (1)

Publication Number Publication Date
FR1053400A true FR1053400A (en) 1954-02-02

Family

ID=9595890

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1053400D Expired FR1053400A (en) 1952-04-04 1952-04-04 Twist drill for drilling rocks

Country Status (1)

Country Link
FR (1) FR1053400A (en)

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