FR2271001B1 - - Google Patents

Info

Publication number
FR2271001B1
FR2271001B1 FR7514788A FR7514788A FR2271001B1 FR 2271001 B1 FR2271001 B1 FR 2271001B1 FR 7514788 A FR7514788 A FR 7514788A FR 7514788 A FR7514788 A FR 7514788A FR 2271001 B1 FR2271001 B1 FR 2271001B1
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
FR7514788A
Other languages
French (fr)
Other versions
FR2271001A1 (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.)
Fried Krupp AG
Original Assignee
Fried Krupp 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 Fried Krupp AG filed Critical Fried Krupp AG
Publication of FR2271001A1 publication Critical patent/FR2271001A1/fr
Application granted granted Critical
Publication of FR2271001B1 publication Critical patent/FR2271001B1/fr
Granted 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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts
    • 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
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • E21B10/445—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts percussion type, e.g. for masonry

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling Tools (AREA)
FR7514788A 1974-05-15 1975-05-13 Powered concrete drill with shaft groove - cutting face studs of hardmetal angled at rim, cone tipped Granted FR2271001A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742423511 DE2423511A1 (de) 1974-05-15 1974-05-15 Bohrer mit foerderwendel

Publications (2)

Publication Number Publication Date
FR2271001A1 FR2271001A1 (en) 1975-12-12
FR2271001B1 true FR2271001B1 (bs) 1979-03-30

Family

ID=5915594

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7514788A Granted FR2271001A1 (en) 1974-05-15 1975-05-13 Powered concrete drill with shaft groove - cutting face studs of hardmetal angled at rim, cone tipped

Country Status (2)

Country Link
DE (1) DE2423511A1 (bs)
FR (1) FR2271001A1 (bs)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3540355C2 (de) * 1985-11-14 1996-01-11 Duss Maschf Bohrer zum drehschlagenden Bohren
DE3919264C2 (de) * 1989-06-13 1997-01-23 Duss Maschf Drehschlagbohrer für ein von Hand führbares Bohrgerät
DE102012212042A1 (de) * 2012-07-10 2014-01-30 Robert Bosch Gmbh Bohrkrone

Also Published As

Publication number Publication date
DE2423511A1 (de) 1975-11-27
FR2271001A1 (en) 1975-12-12

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Legal Events

Date Code Title Description
ST Notification of lapse