ATE95889T1 - CUTTING BIT FOR DRILL TUBE WITH SIMPLE INTERCHANGEABLE TEETH. - Google Patents

CUTTING BIT FOR DRILL TUBE WITH SIMPLE INTERCHANGEABLE TEETH.

Info

Publication number
ATE95889T1
ATE95889T1 AT90125346T AT90125346T ATE95889T1 AT E95889 T1 ATE95889 T1 AT E95889T1 AT 90125346 T AT90125346 T AT 90125346T AT 90125346 T AT90125346 T AT 90125346T AT E95889 T1 ATE95889 T1 AT E95889T1
Authority
AT
Austria
Prior art keywords
teeth
cutting bit
drill tube
cutting
recesses
Prior art date
Application number
AT90125346T
Other languages
German (de)
Inventor
Kurt Blaschke
Original Assignee
Leffer Stahl & App
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 Leffer Stahl & App filed Critical Leffer Stahl & App
Application granted granted Critical
Publication of ATE95889T1 publication Critical patent/ATE95889T1/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
    • E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
    • E21B10/485—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type with inserts in form of chisels, blades or the like
    • 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)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Drilling Tools (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The cutting head for use in sinking cased boreholes has a body in the form of a cylindrical ring that makes an extension to the drill pipe. The cutting head has teeth uniformly spaced around its periphery. The teeth (4) are indirectly joined to the body by sleeves welded into, and completely filling, recesses in the body. The sleeves have recesses for the fitting and securing of feet (5) formed on the teeth. Several features and variants of the cutting-head design are claimed.
AT90125346T 1990-02-01 1990-12-22 CUTTING BIT FOR DRILL TUBE WITH SIMPLE INTERCHANGEABLE TEETH. ATE95889T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4002907A DE4002907A1 (en) 1990-02-01 1990-02-01 Cylindrical cutting head forms extension of borehole drill pipe
EP90125346A EP0439821B1 (en) 1990-02-01 1990-12-22 Cutting crown for casings with easily exchangeable teeth

Publications (1)

Publication Number Publication Date
ATE95889T1 true ATE95889T1 (en) 1993-10-15

Family

ID=6399180

Family Applications (1)

Application Number Title Priority Date Filing Date
AT90125346T ATE95889T1 (en) 1990-02-01 1990-12-22 CUTTING BIT FOR DRILL TUBE WITH SIMPLE INTERCHANGEABLE TEETH.

Country Status (5)

Country Link
EP (1) EP0439821B1 (en)
AT (1) ATE95889T1 (en)
DE (2) DE4002907A1 (en)
DK (1) DK0439821T3 (en)
ES (1) ES2047236T3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9206657U1 (en) * 1992-05-15 1993-09-16 Töpfer, Rainer, 28870 Ottersberg Rotary tool with carbide inserts
DE29612342U1 (en) 1996-07-16 1996-09-12 Bauer Spezialtiefbau Gmbh, 86529 Schrobenhausen Progressive screw drills
DE20100550U1 (en) 2001-01-12 2001-04-19 Bauer Spezialtiefbau Gmbh, 86529 Schrobenhausen Cutting tooth arrangement
DE10205644B4 (en) * 2002-02-12 2006-03-02 Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg drilling
DE10205643C1 (en) 2002-02-12 2003-10-16 Betek Bergbau & Hartmetall Drill bit with detachable cutting teeth
JP4211541B2 (en) 2003-09-01 2009-01-21 ソニー株式会社 Recording control system and recording reservation processing method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE537686C (en) * 1930-08-14 1931-11-09 Haniel & Lueg Gmbh Rotary drill bit with adjustable knives
US3072205A (en) * 1960-02-26 1963-01-08 Salem Tool Co Auger reaming head
US3749449A (en) * 1971-10-13 1973-07-31 Cincinnati Mine Machinery Co Means for removably affixing cutter bit and lug assemblies to driven elements of a mining machine or the like
DE2349711A1 (en) * 1972-10-12 1974-05-02 Austin Hoy & Co Ltd PICK HOLDER FOR CUTTER FOR MINERAL MATERIALS
DE2539707A1 (en) * 1975-09-06 1977-03-17 Marks & Co Road surface cutter roller replaceable tooth - has conical bottom and constant top sections fitting corresponding roller recess
DE3637456A1 (en) * 1986-06-09 1988-05-11 Erich Wezel Hollow drill bit
GB8622605D0 (en) * 1986-09-19 1986-10-22 Wimet Mining Ltd Mineral cutting

Also Published As

Publication number Publication date
EP0439821A1 (en) 1991-08-07
EP0439821B1 (en) 1993-10-13
DE4002907C2 (en) 1992-01-02
DE59003087D1 (en) 1993-11-18
DK0439821T3 (en) 1994-03-07
ES2047236T3 (en) 1994-02-16
DE4002907A1 (en) 1991-08-08

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