FI870454A - Borrspets. - Google Patents

Borrspets. Download PDF

Info

Publication number
FI870454A
FI870454A FI870454A FI870454A FI870454A FI 870454 A FI870454 A FI 870454A FI 870454 A FI870454 A FI 870454A FI 870454 A FI870454 A FI 870454A FI 870454 A FI870454 A FI 870454A
Authority
FI
Finland
Prior art keywords
borrspets
Prior art date
Application number
FI870454A
Other languages
English (en)
Other versions
FI870454A0 (fi
Inventor
Richard Swiegers
Original Assignee
Boart Int Ltd
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 Boart Int Ltd filed Critical Boart Int Ltd
Publication of FI870454A0 publication Critical patent/FI870454A0/fi
Publication of FI870454A publication Critical patent/FI870454A/fi

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
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
    • 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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts

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)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Earth Drilling (AREA)
FI870454A 1986-02-03 1987-02-02 Borrspets. FI870454A (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA86769 1986-02-03

Publications (2)

Publication Number Publication Date
FI870454A0 FI870454A0 (fi) 1987-02-02
FI870454A true FI870454A (fi) 1987-08-04

Family

ID=25578265

Family Applications (1)

Application Number Title Priority Date Filing Date
FI870454A FI870454A (fi) 1986-02-03 1987-02-02 Borrspets.

Country Status (5)

Country Link
EP (1) EP0233037A3 (fi)
AU (1) AU6822087A (fi)
FI (1) FI870454A (fi)
IE (1) IE870259L (fi)
NO (1) NO870356L (fi)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2434086B1 (en) * 2010-09-22 2013-05-15 Sandvik Intellectual Property AB A rock drill bit and a drilling assembly for percussive rock drilling

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE249360C (fi) *
US1388490A (en) * 1920-09-18 1921-08-23 John R Suman Rotary earth-boring drill
US4085809A (en) * 1977-01-10 1978-04-25 Robert Lovell Reconditionable drill bit assembly

Also Published As

Publication number Publication date
NO870356D0 (no) 1987-01-28
FI870454A0 (fi) 1987-02-02
AU6822087A (en) 1988-08-04
EP0233037A2 (en) 1987-08-19
IE870259L (en) 1987-08-03
EP0233037A3 (en) 1988-09-14
NO870356L (no) 1987-08-04

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Legal Events

Date Code Title Description
FD Application lapsed

Owner name: BOART INTERNATIONAL LIMITED