FR2095838A5 - - Google Patents

Info

Publication number
FR2095838A5
FR2095838A5 FR7120066A FR7120066A FR2095838A5 FR 2095838 A5 FR2095838 A5 FR 2095838A5 FR 7120066 A FR7120066 A FR 7120066A FR 7120066 A FR7120066 A FR 7120066A FR 2095838 A5 FR2095838 A5 FR 2095838A5
Authority
FR
France
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
FR7120066A
Other languages
French (fr)
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.)
Gebrueder Boehler and Co AG
Original Assignee
Gebrueder Boehler and Co AG
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 Gebrueder Boehler and Co AG filed Critical Gebrueder Boehler and Co AG
Application granted granted Critical
Publication of FR2095838A5 publication Critical patent/FR2095838A5/fr
Expired 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
    • 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)
FR7120066A 1970-06-05 1971-06-03 Expired FR2095838A5 (OSRAM)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT504170A AT302937B (de) 1970-06-05 1970-06-05 Gesteinsbohrkrone, insbesondere für Schlagbohrgeräte

Publications (1)

Publication Number Publication Date
FR2095838A5 true FR2095838A5 (OSRAM) 1972-02-11

Family

ID=3571262

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7120066A Expired FR2095838A5 (OSRAM) 1970-06-05 1971-06-03

Country Status (6)

Country Link
US (1) US3800892A (OSRAM)
AT (1) AT302937B (OSRAM)
BE (1) BE768001A (OSRAM)
CH (1) CH521511A (OSRAM)
DE (1) DE2124958A1 (OSRAM)
FR (1) FR2095838A5 (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466605A1 (fr) * 1979-10-04 1981-04-10 Sandvik Ab Trepan a percussion a boutons rapportes pour perforatrice

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3915246A (en) * 1974-05-16 1975-10-28 Adel E Sheshtawy Rotary drilling bit
US4304312A (en) * 1980-01-11 1981-12-08 Sandvik Aktiebolag Percussion drill bit having centrally projecting insert
US4515226A (en) * 1983-03-07 1985-05-07 Norton Christensen, Inc. Tooth design to avoid shearing stresses
FR2623242A1 (fr) * 1987-11-12 1989-05-19 Contant Paul Carottier pneumatique pour fouilles cylindriques en roches
DE4101458A1 (de) * 1991-01-19 1992-07-23 Wolf Thomas Fuer einen mit axialem druck und schlaegen arbeitenden, umlaufenden gesteinsbohrer bestimmter bohrmeissel
US5467836A (en) * 1992-01-31 1995-11-21 Baker Hughes Incorporated Fixed cutter bit with shear cutting gage
GB2296267B (en) * 1994-12-21 1998-06-10 Smith International Hammer rock bit gage protection
SE0402026L (sv) * 2004-08-17 2006-01-17 Sandvik Intellectual Property Bergborrkrona och gängförband för slående bergborrning

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE645377A (OSRAM) *
US2689108A (en) * 1950-07-04 1954-09-14 Sandvikens Jernverks Ab Rock drill bit with hard m etal cutting insert
US3185228A (en) * 1963-01-21 1965-05-25 Hughes Tool Co Rotary-percussion drill bit with heel row inserts to prevent wedging
US3311181A (en) * 1964-05-04 1967-03-28 John B Fowler Bi-metal drilling tooth
US3346060A (en) * 1965-12-23 1967-10-10 Beyer Leaman Rex Rotary-air-percussion, stabilizer and reamer drill bit of its own true gauge
US3536150A (en) * 1968-09-05 1970-10-27 Frank E Stebley Rotary-percussion drill bit
US3583504A (en) * 1969-02-24 1971-06-08 Mission Mfg Co Gauge cutting bit
US3548959A (en) * 1969-07-10 1970-12-22 Gulf Research Development Co Relief-type jet bits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466605A1 (fr) * 1979-10-04 1981-04-10 Sandvik Ab Trepan a percussion a boutons rapportes pour perforatrice

Also Published As

Publication number Publication date
AT302937B (de) 1972-11-10
CH521511A (de) 1972-04-15
US3800892A (en) 1974-04-02
BE768001A (fr) 1971-11-03
DE2124958A1 (de) 1971-12-16

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Legal Events

Date Code Title Description
ST Notification of lapse