NO870356L - Bit. - Google Patents

Bit.

Info

Publication number
NO870356L
NO870356L NO87870356A NO870356A NO870356L NO 870356 L NO870356 L NO 870356L NO 87870356 A NO87870356 A NO 87870356A NO 870356 A NO870356 A NO 870356A NO 870356 L NO870356 L NO 870356L
Authority
NO
Norway
Prior art keywords
bit
Prior art date
Application number
NO87870356A
Other languages
Norwegian (no)
Other versions
NO870356D0 (en
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 NO870356D0 publication Critical patent/NO870356D0/en
Publication of NO870356L publication Critical patent/NO870356L/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
NO87870356A 1986-02-03 1987-01-28 Bit. NO870356L (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
NO870356D0 NO870356D0 (en) 1987-01-28
NO870356L true NO870356L (en) 1987-08-04

Family

ID=25578265

Family Applications (1)

Application Number Title Priority Date Filing Date
NO87870356A NO870356L (en) 1986-02-03 1987-01-28 Bit.

Country Status (5)

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

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 (en) *
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
EP0233037A3 (en) 1988-09-14
IE870259L (en) 1987-08-03
AU6822087A (en) 1988-08-04
NO870356D0 (en) 1987-01-28
FI870454A (en) 1987-08-04
FI870454A0 (en) 1987-02-02
EP0233037A2 (en) 1987-08-19

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