NL7713777A - STONE DRILL. - Google Patents

STONE DRILL.

Info

Publication number
NL7713777A
NL7713777A NL7713777A NL7713777A NL7713777A NL 7713777 A NL7713777 A NL 7713777A NL 7713777 A NL7713777 A NL 7713777A NL 7713777 A NL7713777 A NL 7713777A NL 7713777 A NL7713777 A NL 7713777A
Authority
NL
Netherlands
Prior art keywords
stone drill
drill
stone
Prior art date
Application number
NL7713777A
Other languages
Dutch (nl)
Original Assignee
Werkzeugbau Gmbh
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 Werkzeugbau Gmbh filed Critical Werkzeugbau Gmbh
Publication of NL7713777A publication Critical patent/NL7713777A/en

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
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
    • 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)
NL7713777A 1976-12-24 1977-12-13 STONE DRILL. NL7713777A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762658826 DE2658826C3 (en) 1976-12-24 1976-12-24 Rock drill head with pin-shaped, radial attachments-bearing cutting edges and tool for making the openings for the radial attachments in the lateral surfaces of the drill head

Publications (1)

Publication Number Publication Date
NL7713777A true NL7713777A (en) 1978-06-27

Family

ID=5996623

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7713777A NL7713777A (en) 1976-12-24 1977-12-13 STONE DRILL.

Country Status (5)

Country Link
DE (1) DE2658826C3 (en)
DK (1) DK514777A (en)
FR (1) FR2375435A1 (en)
NL (1) NL7713777A (en)
SE (1) SE7713089L (en)

Also Published As

Publication number Publication date
DE2658826B2 (en) 1979-01-18
DE2658826C3 (en) 1980-10-23
SE7713089L (en) 1978-06-25
DK514777A (en) 1978-06-25
FR2375435B3 (en) 1980-08-08
DE2658826A1 (en) 1978-06-29
FR2375435A1 (en) 1978-07-21

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Legal Events

Date Code Title Description
BV The patent application has lapsed