AT373822B - Bohrkrone od.dgl. - Google Patents

Bohrkrone od.dgl.

Info

Publication number
AT373822B
AT373822B AT385979A AT385979A AT373822B AT 373822 B AT373822 B AT 373822B AT 385979 A AT385979 A AT 385979A AT 385979 A AT385979 A AT 385979A AT 373822 B AT373822 B AT 373822B
Authority
AT
Austria
Prior art keywords
similar
drill bit
drill
bit
Prior art date
Application number
AT385979A
Other languages
English (en)
Other versions
ATA385979A (de
Original Assignee
Sandvik Ab
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 Sandvik Ab filed Critical Sandvik Ab
Priority to AT385979A priority Critical patent/AT373822B/de
Priority to US06/083,664 priority patent/US4289211A/en
Publication of ATA385979A publication Critical patent/ATA385979A/de
Application granted granted Critical
Publication of AT373822B publication Critical patent/AT373822B/de

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

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)
AT385979A 1977-03-03 1979-05-28 Bohrkrone od.dgl. AT373822B (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT385979A AT373822B (de) 1979-05-28 1979-05-28 Bohrkrone od.dgl.
US06/083,664 US4289211A (en) 1977-03-03 1979-10-11 Rock drill bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT385979A AT373822B (de) 1979-05-28 1979-05-28 Bohrkrone od.dgl.

Publications (2)

Publication Number Publication Date
ATA385979A ATA385979A (de) 1983-07-15
AT373822B true AT373822B (de) 1984-02-27

Family

ID=3556408

Family Applications (1)

Application Number Title Priority Date Filing Date
AT385979A AT373822B (de) 1977-03-03 1979-05-28 Bohrkrone od.dgl.

Country Status (1)

Country Link
AT (1) AT373822B (de)

Also Published As

Publication number Publication date
ATA385979A (de) 1983-07-15

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee
ELJ Ceased due to non-payment of the annual fee