NL275415A - - Google Patents

Info

Publication number
NL275415A
NL275415A NL275415DA NL275415A NL 275415 A NL275415 A NL 275415A NL 275415D A NL275415D A NL 275415DA NL 275415 A NL275415 A NL 275415A
Authority
NL
Netherlands
Application number
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.)
Publication of NL275415A publication Critical patent/NL275415A/xx

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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/28—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with non-expansible roller cutters
    • 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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers

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)
  • Excavating Of Shafts Or Tunnels (AREA)
NL275415D 1961-03-13 NL275415A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB61648A DE1235237B (en) 1961-03-13 1961-03-13 Extension roller chisel

Publications (1)

Publication Number Publication Date
NL275415A true NL275415A (en)

Family

ID=6973275

Family Applications (1)

Application Number Title Priority Date Filing Date
NL275415D NL275415A (en) 1961-03-13

Country Status (7)

Country Link
US (1) US3204710A (en)
BE (1) BE614760A (en)
CH (1) CH391622A (en)
DE (1) DE1235237B (en)
GB (1) GB980644A (en)
NL (1) NL275415A (en)
SE (1) SE220325C1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3326307A (en) * 1965-01-28 1967-06-20 Chicago Pneumatic Tool Co Rock bit roller cone
ZA723776B (en) * 1972-06-02 1974-01-30 Hard Metals Ltd Disc cutting unit for use on rock boring machines
US3982595A (en) * 1972-07-24 1976-09-28 Dresser Industries, Inc. Rock boring cutter with replaceable cutting elements
US4040493A (en) * 1976-05-13 1977-08-09 Dresser Industries, Inc. Rock boring cutter with thread-on replaceable cutting element
US4248314A (en) * 1979-05-29 1981-02-03 Hughes Tool Company Shaft drill bit with overlapping cutter arrangement
SE467700B (en) * 1986-01-28 1992-08-31 Boart Int Ltd DISC SIZE SHOULD BE PRESCRIBED IN CUTTING MACHINERY

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE187375C (en) *
US748206A (en) * 1902-09-04 1903-12-29 Wilhelm Mueller Tube-cleaner.
US1152151A (en) * 1911-04-03 1915-08-31 Harry R Decker Drill.
US1747909A (en) * 1922-05-29 1930-02-18 Universal Rotary Bit Company Rotary sectional bit
US1747908A (en) * 1923-08-11 1930-02-18 Universal Rotary Bit Company Rotary drill bit
US2241549A (en) * 1940-02-06 1941-05-13 Sr John W Hatcher Rotary bit
US3016099A (en) * 1959-07-17 1962-01-09 Terminal Drilling And Producti Hole enlarger
US3046055A (en) * 1960-02-19 1962-07-24 Anderson Co Position-adjusting mechanism
FR1252535A (en) * 1960-04-01 1961-01-27 Bergwerksverband Gmbh Roller widening foil, for drilling
DE1224679B (en) * 1961-02-27 1966-09-15 Soeding & Halbach J C Extension roller chisel

Also Published As

Publication number Publication date
US3204710A (en) 1965-09-07
BE614760A (en) 1962-09-02
DE1235237B (en) 1967-03-02
GB980644A (en) 1965-01-13
SE220325C1 (en) 1968-05-07
CH391622A (en) 1965-05-15

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