FR889080A - Foret de mine à tranchant en métal dur rapporté - Google Patents

Foret de mine à tranchant en métal dur rapporté

Info

Publication number
FR889080A
FR889080A FR889080DA FR889080A FR 889080 A FR889080 A FR 889080A FR 889080D A FR889080D A FR 889080DA FR 889080 A FR889080 A FR 889080A
Authority
FR
France
Prior art keywords
cutting edge
drill bit
hard metal
metal cutting
bit attached
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
Application number
Other languages
English (en)
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.)
FLOTTMANN AG
Original Assignee
FLOTTMANN 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 FLOTTMANN AG filed Critical FLOTTMANN AG
Application granted granted Critical
Publication of FR889080A publication Critical patent/FR889080A/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
    • E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids

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)
FR889080D 1942-01-16 1942-12-15 Foret de mine à tranchant en métal dur rapporté Expired FR889080A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE889080X 1942-01-16

Publications (1)

Publication Number Publication Date
FR889080A true FR889080A (fr) 1943-12-30

Family

ID=6834394

Family Applications (1)

Application Number Title Priority Date Filing Date
FR889080D Expired FR889080A (fr) 1942-01-16 1942-12-15 Foret de mine à tranchant en métal dur rapporté

Country Status (1)

Country Link
FR (1) FR889080A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE952523C (de) * 1948-12-02 1957-01-10 Boehler & Co Ag Geb Gesteinsbohrkopf mit einfacher oder doppelter Meisselschneide
US4951761A (en) * 1988-06-18 1990-08-28 Hawera Probst Gmbh & Co. Rock drill
US5628376A (en) * 1994-10-15 1997-05-13 Hilti Aktiengesellschaft Drilling tool bit with a carrier member and cutter members

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE952523C (de) * 1948-12-02 1957-01-10 Boehler & Co Ag Geb Gesteinsbohrkopf mit einfacher oder doppelter Meisselschneide
US4951761A (en) * 1988-06-18 1990-08-28 Hawera Probst Gmbh & Co. Rock drill
US5628376A (en) * 1994-10-15 1997-05-13 Hilti Aktiengesellschaft Drilling tool bit with a carrier member and cutter members

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