FI783588A - Jordborrskaer - Google Patents

Jordborrskaer

Info

Publication number
FI783588A
FI783588A FI783588A FI783588A FI783588A FI 783588 A FI783588 A FI 783588A FI 783588 A FI783588 A FI 783588A FI 783588 A FI783588 A FI 783588A FI 783588 A FI783588 A FI 783588A
Authority
FI
Finland
Prior art keywords
jordborrskaer
Prior art date
Application number
FI783588A
Other languages
English (en)
Inventor
Howard Earl Mitchell
Original Assignee
Dresser Ind
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 Dresser Ind filed Critical Dresser Ind
Publication of FI783588A publication Critical patent/FI783588A/fi

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
    • E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
    • E21B10/52—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type with chisel- or button-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
    • E21B10/08—Roller bits
    • E21B10/16—Roller bits characterised by tooth form or arrangement

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)
  • Earth Drilling (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
FI783588A 1977-12-07 1978-11-23 Jordborrskaer FI783588A (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85823677A 1977-12-07 1977-12-07

Publications (1)

Publication Number Publication Date
FI783588A true FI783588A (fi) 1979-06-08

Family

ID=25327823

Family Applications (1)

Application Number Title Priority Date Filing Date
FI783588A FI783588A (fi) 1977-12-07 1978-11-23 Jordborrskaer

Country Status (8)

Country Link
US (1) US4161225A (fi)
AU (1) AU522970B2 (fi)
CA (1) CA1089439A (fi)
FI (1) FI783588A (fi)
GB (1) GB2009817B (fi)
NO (1) NO783957L (fi)
SE (1) SE7812554L (fi)
ZA (1) ZA786282B (fi)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4552232A (en) * 1984-06-29 1985-11-12 Spiral Drilling Systems, Inc. Drill-bit with full offset cutter bodies
DE3539717C2 (de) * 1984-06-29 1996-08-08 Spiral Drilling Systems Inc Rollenmeißel
US5027913A (en) * 1990-04-12 1991-07-02 Smith International, Inc. Insert attack angle for roller cone rock bits
US6857488B2 (en) * 2003-01-31 2005-02-22 Robert X. Pastor Boring head cutter
US8353369B2 (en) 2008-08-06 2013-01-15 Atlas Copco Secoroc, LLC Percussion assisted rotary earth bit and method of operating the same
US20100032216A1 (en) * 2008-08-08 2010-02-11 Osborne Jr Andrew J Earth boring cutter employing helical teeth

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1224287A (en) * 1914-06-08 1917-05-01 Edward Double Rotary bit.
US1691623A (en) * 1925-06-17 1928-11-13 Lester C Black Well-drilling tool
GB662063A (en) * 1949-02-16 1951-11-28 Harnischfeger Corp Improvements in an earth cutting tooth
US3250337A (en) * 1963-10-29 1966-05-10 Max J Demo Rotary shock wave drill bit
FR1514999A (fr) * 1966-09-21 1968-03-01 Seita Dispositif d'alimentation de machines à paqueter
US3593812A (en) * 1969-01-27 1971-07-20 Lawrence Mfg Co Means for cutting rock

Also Published As

Publication number Publication date
ZA786282B (en) 1979-10-31
AU4209278A (en) 1979-06-14
AU522970B2 (en) 1982-07-08
NO783957L (no) 1979-06-08
SE7812554L (sv) 1979-06-08
CA1089439A (en) 1980-11-11
US4161225A (en) 1979-07-17
GB2009817A (en) 1979-06-20
GB2009817B (en) 1982-06-23

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