GB2242464B - Drill bit - Google Patents

Drill bit

Info

Publication number
GB2242464B
GB2242464B GB9106296A GB9106296A GB2242464B GB 2242464 B GB2242464 B GB 2242464B GB 9106296 A GB9106296 A GB 9106296A GB 9106296 A GB9106296 A GB 9106296A GB 2242464 B GB2242464 B GB 2242464B
Authority
GB
United Kingdom
Prior art keywords
drill bit
drill
bit
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 - Fee Related
Application number
GB9106296A
Other languages
English (en)
Other versions
GB9106296D0 (en
GB2242464A (en
Inventor
Jan-Gunnar Hedlund
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
Publication of GB9106296D0 publication Critical patent/GB9106296D0/en
Publication of GB2242464A publication Critical patent/GB2242464A/en
Application granted granted Critical
Publication of GB2242464B publication Critical patent/GB2242464B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • E21B10/36—Percussion drill bits
    • E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids
    • 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)
  • Earth Drilling (AREA)
GB9106296A 1990-03-26 1991-03-25 Drill bit Expired - Fee Related GB2242464B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9001081A SE503325C2 (sv) 1990-03-26 1990-03-26 Borrkrona

Publications (3)

Publication Number Publication Date
GB9106296D0 GB9106296D0 (en) 1991-05-08
GB2242464A GB2242464A (en) 1991-10-02
GB2242464B true GB2242464B (en) 1994-07-13

Family

ID=20378983

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9106296A Expired - Fee Related GB2242464B (en) 1990-03-26 1991-03-25 Drill bit

Country Status (2)

Country Link
GB (1) GB2242464B (sv)
SE (1) SE503325C2 (sv)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4101458A1 (de) * 1991-01-19 1992-07-23 Wolf Thomas Fuer einen mit axialem druck und schlaegen arbeitenden, umlaufenden gesteinsbohrer bestimmter bohrmeissel
BR9502857A (pt) * 1995-06-20 1997-09-23 Sandvik Ab Ponteira para perfuração de rocha
SE508490C2 (sv) * 1996-03-14 1998-10-12 Sandvik Ab Bergborrkrona för slående borrning
US6253864B1 (en) * 1998-08-10 2001-07-03 David R. Hall Percussive shearing drill bit

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1276249A (en) * 1969-02-24 1972-06-01 Mission Mfg Co Improvements in or relating to percussion drill bits
GB1296924A (sv) * 1969-03-06 1972-11-22
US3997011A (en) * 1975-05-27 1976-12-14 Staroba Otto R Button drill bit structure
GB1461005A (en) * 1973-08-29 1977-01-13 Bakerdrill Inc Core bit for producing a core while drilling a bore hole
GB2059482A (en) * 1979-10-04 1981-04-23 Sandvik Ab Rock drill
US4304312A (en) * 1980-01-11 1981-12-08 Sandvik Aktiebolag Percussion drill bit having centrally projecting insert
EP0122242A1 (en) * 1983-04-05 1984-10-17 Santrade Ltd. Rock drill

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1276249A (en) * 1969-02-24 1972-06-01 Mission Mfg Co Improvements in or relating to percussion drill bits
GB1296924A (sv) * 1969-03-06 1972-11-22
GB1461005A (en) * 1973-08-29 1977-01-13 Bakerdrill Inc Core bit for producing a core while drilling a bore hole
US3997011A (en) * 1975-05-27 1976-12-14 Staroba Otto R Button drill bit structure
GB2059482A (en) * 1979-10-04 1981-04-23 Sandvik Ab Rock drill
US4304312A (en) * 1980-01-11 1981-12-08 Sandvik Aktiebolag Percussion drill bit having centrally projecting insert
EP0122242A1 (en) * 1983-04-05 1984-10-17 Santrade Ltd. Rock drill

Also Published As

Publication number Publication date
SE503325C2 (sv) 1996-05-28
SE9001081D0 (sv) 1990-03-26
GB9106296D0 (en) 1991-05-08
SE9001081L (sv) 1991-09-27
GB2242464A (en) 1991-10-02

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Legal Events

Date Code Title Description
711B Application made for correction of error (sect. 117/77)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20020325