FR556085A - Perfectionnements aux trépans - Google Patents

Perfectionnements aux trépans

Info

Publication number
FR556085A
FR556085A FR556085DA FR556085A FR 556085 A FR556085 A FR 556085A FR 556085D A FR556085D A FR 556085DA FR 556085 A FR556085 A FR 556085A
Authority
FR
France
Prior art keywords
drill bit
drill
bit
bit 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)
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.)
MC CORMICK DRILLING TOOL COMPA
Original Assignee
MC CORMICK DRILLING TOOL COMPA
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 MC CORMICK DRILLING TOOL COMPA filed Critical MC CORMICK DRILLING TOOL COMPA
Application granted granted Critical
Publication of FR556085A publication Critical patent/FR556085A/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
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
    • E21B10/325—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools the cutter being shifted by a spring mechanism

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)
FR556085D 1922-09-14 1922-09-14 Perfectionnements aux trépans Expired FR556085A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR556085T 1922-09-14

Publications (1)

Publication Number Publication Date
FR556085A true FR556085A (fr) 1923-07-11

Family

ID=8939885

Family Applications (1)

Application Number Title Priority Date Filing Date
FR556085D Expired FR556085A (fr) 1922-09-14 1922-09-14 Perfectionnements aux trépans

Country Status (1)

Country Link
FR (1) FR556085A (fr)

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