SE9004028L - Borrstraengselement - Google Patents

Borrstraengselement

Info

Publication number
SE9004028L
SE9004028L SE9004028A SE9004028A SE9004028L SE 9004028 L SE9004028 L SE 9004028L SE 9004028 A SE9004028 A SE 9004028A SE 9004028 A SE9004028 A SE 9004028A SE 9004028 L SE9004028 L SE 9004028L
Authority
SE
Sweden
Prior art keywords
bar
crown
drill
transmission
reductions
Prior art date
Application number
SE9004028A
Other languages
English (en)
Other versions
SE9004028D0 (sv
Inventor
P-O Liljebrand
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 SE9004028A priority Critical patent/SE9004028L/sv
Publication of SE9004028D0 publication Critical patent/SE9004028D0/sv
Publication of SE9004028L publication Critical patent/SE9004028L/sv

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

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)
  • Percussive Tools And Related Accessories (AREA)
SE9004028A 1990-12-17 1990-12-17 Borrstraengselement SE9004028L (sv)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9004028A SE9004028L (sv) 1990-12-17 1990-12-17 Borrstraengselement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9004028A SE9004028L (sv) 1990-12-17 1990-12-17 Borrstraengselement

Publications (2)

Publication Number Publication Date
SE9004028D0 SE9004028D0 (sv) 1990-12-17
SE9004028L true SE9004028L (sv) 1992-06-18

Family

ID=20381218

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9004028A SE9004028L (sv) 1990-12-17 1990-12-17 Borrstraengselement

Country Status (1)

Country Link
SE (1) SE9004028L (sv)

Also Published As

Publication number Publication date
SE9004028D0 (sv) 1990-12-17

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Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 9004028-8

Effective date: 19940701