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 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB61648A DE1235237B (de) 1961-03-13 1961-03-13 Erweiterungsrollenmeissel

Publications (1)

Publication Number Publication Date
NL275415A true NL275415A (enrdf_load_stackoverflow)

Family

ID=6973275

Family Applications (1)

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

Country Status (7)

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

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 (sv) * 1986-01-28 1992-08-31 Boart Int Ltd Skivformat skaer foer bergbearbetningsmaskiner

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE187375C (enrdf_load_stackoverflow) *
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 (fr) * 1960-04-01 1961-01-27 Bergwerksverband Gmbh Fleuret d'élargissement à galets, pour forages
DE1224679B (de) * 1961-02-27 1966-09-15 Soeding & Halbach J C Erweiterungsrollenmeissel

Also Published As

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

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