ZA923569B - Drill bit or trepan - Google Patents

Drill bit or trepan

Info

Publication number
ZA923569B
ZA923569B ZA923569A ZA923569A ZA923569B ZA 923569 B ZA923569 B ZA 923569B ZA 923569 A ZA923569 A ZA 923569A ZA 923569 A ZA923569 A ZA 923569A ZA 923569 B ZA923569 B ZA 923569B
Authority
ZA
South Africa
Prior art keywords
trepan
drill bit
drill
bit
Prior art date
Application number
ZA923569A
Inventor
Josef Mocivnik
Mocivnik Josef
Guenther Melcher
Melcher Guenther
Uwe Melcher
Melcher Uwe
Original Assignee
Rocbo Werkzeug 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 Rocbo Werkzeug Gmbh filed Critical Rocbo Werkzeug Gmbh
Publication of ZA923569B publication Critical patent/ZA923569B/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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/58—Chisel-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
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable

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)
ZA923569A 1991-05-16 1992-05-15 Drill bit or trepan ZA923569B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT101291 1991-05-16

Publications (1)

Publication Number Publication Date
ZA923569B true ZA923569B (en) 1993-01-27

Family

ID=3504887

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA923569A ZA923569B (en) 1991-05-16 1992-05-15 Drill bit or trepan

Country Status (3)

Country Link
EP (1) EP0511200A1 (en)
DE (1) DE9206631U1 (en)
ZA (1) ZA923569B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4406513A1 (en) * 1994-02-28 1995-08-31 Plica Werkzeugfabrik Ag Carbide plate and rock drill equipped with it
AT265U3 (en) * 1995-01-18 1996-01-25 Techmo Entw & Vertriebs Gmbh DRILL BIT

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360840A (en) * 1966-02-28 1968-01-02 Jean K Lampherer Well bore milling apparatus
US4271917A (en) * 1979-04-09 1981-06-09 Syndrill Products Joint Venture Locking device for hard metal inserts
DE3175194D1 (en) * 1980-01-10 1986-10-02 Stonehouse Ltd Rotary drill bits
US4605157A (en) * 1984-01-31 1986-08-12 Nl Industries, Inc. Drill bit manufacturing method

Also Published As

Publication number Publication date
EP0511200A1 (en) 1992-10-28
DE9206631U1 (en) 1992-07-30

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