NO771177L - Borekrone. - Google Patents

Borekrone.

Info

Publication number
NO771177L
NO771177L NO771177A NO771177A NO771177L NO 771177 L NO771177 L NO 771177L NO 771177 A NO771177 A NO 771177A NO 771177 A NO771177 A NO 771177A NO 771177 L NO771177 L NO 771177L
Authority
NO
Norway
Prior art keywords
drill bit
rod
conical
hole
internal
Prior art date
Application number
NO771177A
Other languages
English (en)
Norwegian (no)
Inventor
Hans Per Olof Lundstroem
Original Assignee
Sandvik Ab
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 Sandvik Ab filed Critical Sandvik Ab
Publication of NO771177L publication Critical patent/NO771177L/no

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/02—Percussive tool bits
    • 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
    • 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)
  • Earth Drilling (AREA)
NO771177A 1976-04-02 1977-04-01 Borekrone. NO771177L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA249,433A CA1038856A (en) 1976-04-02 1976-04-02 Percussion drill bit

Publications (1)

Publication Number Publication Date
NO771177L true NO771177L (no) 1977-10-04

Family

ID=4105622

Family Applications (1)

Application Number Title Priority Date Filing Date
NO771177A NO771177L (no) 1976-04-02 1977-04-01 Borekrone.

Country Status (4)

Country Link
CA (1) CA1038856A (enExample)
FI (1) FI770994A7 (enExample)
FR (1) FR2346110A1 (enExample)
NO (1) NO771177L (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH670418A5 (enExample) * 1986-03-24 1989-06-15 Zepf Hans Rudolf
CN102635315B (zh) * 2012-04-27 2014-05-07 中国地质大学（武汉） 一种带修孔钻头的接头

Also Published As

Publication number Publication date
FR2346110B1 (enExample) 1981-11-20
FR2346110A1 (fr) 1977-10-28
CA1038856A (en) 1978-09-19
FI770994A7 (enExample) 1977-10-03

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