CA1038856A - Percussion drill bit - Google Patents

Percussion drill bit

Info

Publication number
CA1038856A
CA1038856A CA249,433A CA249433A CA1038856A CA 1038856 A CA1038856 A CA 1038856A CA 249433 A CA249433 A CA 249433A CA 1038856 A CA1038856 A CA 1038856A
Authority
CA
Canada
Prior art keywords
bit
rod
hole
internal
conical
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
CA249,433A
Other languages
English (en)
French (fr)
Inventor
Hans P. O. Lundstrom
Harry A. Wiredal
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.)
Sandvik AB
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
Priority to CA249,433A priority Critical patent/CA1038856A/en
Priority to FI770994A priority patent/FI770994A7/fi
Priority to FR7709699A priority patent/FR2346110A1/fr
Priority to NO771177A priority patent/NO771177L/no
Application granted granted Critical
Publication of CA1038856A publication Critical patent/CA1038856A/en
Expired legal-status Critical Current

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)
CA249,433A 1976-04-02 1976-04-02 Percussion drill bit Expired CA1038856A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA249,433A CA1038856A (en) 1976-04-02 1976-04-02 Percussion drill bit
FI770994A FI770994A7 (enExample) 1976-04-02 1977-03-30
FR7709699A FR2346110A1 (fr) 1976-04-02 1977-03-31 Fleuret pour le forage par percussion
NO771177A NO771177L (no) 1976-04-02 1977-04-01 Borekrone.

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
CA1038856A true CA1038856A (en) 1978-09-19

Family

ID=4105622

Family Applications (1)

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

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102635315A (zh) * 2012-04-27 2012-08-15 中国地质大学（武汉） 一种带修孔钻头的接头

Families Citing this family (1)

* 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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102635315A (zh) * 2012-04-27 2012-08-15 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
FR2346110A1 (fr) 1977-10-28
FR2346110B1 (enExample) 1981-11-20
FI770994A7 (enExample) 1977-10-03
NO771177L (no) 1977-10-04

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