NL6816579A - - Google Patents

Info

Publication number
NL6816579A
NL6816579A NL6816579A NL6816579A NL6816579A NL 6816579 A NL6816579 A NL 6816579A NL 6816579 A NL6816579 A NL 6816579A NL 6816579 A NL6816579 A NL 6816579A NL 6816579 A NL6816579 A NL 6816579A
Authority
NL
Netherlands
Application number
NL6816579A
Other versions
NL157380B (nl
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 filed Critical
Publication of NL6816579A publication Critical patent/NL6816579A/xx
Publication of NL157380B publication Critical patent/NL157380B/xx

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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/22—Rods or pipes with helical structure
    • 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)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Earth Drilling (AREA)
  • Drilling Tools (AREA)
NL6816579A 1967-11-21 1968-11-20 Steenboor. NL157380B (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1608358 1967-11-21

Publications (2)

Publication Number Publication Date
NL6816579A true NL6816579A (de) 1969-05-23
NL157380B NL157380B (nl) 1978-07-17

Family

ID=5681528

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6816579A NL157380B (nl) 1967-11-21 1968-11-20 Steenboor.

Country Status (5)

Country Link
BE (1) BE724180A (de)
CH (1) CH476559A (de)
DE (1) DE1608358C3 (de)
NL (1) NL157380B (de)
SE (1) SE349771B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK152555C (da) * 1985-04-01 1988-08-01 Joran Bor A S Stenbor, isaer til hammerboremaskiner
DE3540355C2 (de) * 1985-11-14 1996-01-11 Duss Maschf Bohrer zum drehschlagenden Bohren
GB2393681A (en) 2002-10-03 2004-04-07 Black & Decker Inc Masonry drilling tool

Also Published As

Publication number Publication date
DE1608358B2 (de) 1974-08-15
BE724180A (de) 1969-05-02
CH476559A (de) 1969-08-15
DE1608358A1 (de) 1970-12-23
NL157380B (nl) 1978-07-17
SE349771B (de) 1972-10-09
DE1608358C3 (de) 1979-01-04

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: DUSS