CH386365A - Poll crown - Google Patents

Poll crown

Info

Publication number
CH386365A
CH386365A CH1059262A CH1059262A CH386365A CH 386365 A CH386365 A CH 386365A CH 1059262 A CH1059262 A CH 1059262A CH 1059262 A CH1059262 A CH 1059262A CH 386365 A CH386365 A CH 386365A
Authority
CH
Switzerland
Prior art keywords
poll
crown
poll crown
Prior art date
Application number
CH1059262A
Other languages
French (fr)
Inventor
Jerome Robert
Original Assignee
Diamant Boart Sa
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 Diamant Boart Sa filed Critical Diamant Boart Sa
Publication of CH386365A publication Critical patent/CH386365A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/14—Zonally-graded wheels; Composite wheels comprising different abrasives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with cooling provisions
    • 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
    • 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
    • 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
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids

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)
  • Drilling Tools (AREA)
CH1059262A 1961-11-24 1962-09-06 Poll crown CH386365A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE486952 1961-11-24

Publications (1)

Publication Number Publication Date
CH386365A true CH386365A (en) 1965-01-15

Family

ID=3844619

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1059262A CH386365A (en) 1961-11-24 1962-09-06 Poll crown

Country Status (2)

Country Link
CH (1) CH386365A (en)
GB (1) GB980799A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106392870A (en) * 2016-12-15 2017-02-15 东旭科技集团有限公司 Grinding tool

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5269694U (en) * 1975-11-19 1977-05-24
US4109737A (en) * 1976-06-24 1978-08-29 General Electric Company Rotary drill bit
US4373593A (en) * 1979-03-16 1983-02-15 Christensen, Inc. Drill bit
DE3111156C1 (en) * 1981-03-21 1983-04-14 Christensen, Inc., 84115 Salt Lake City, Utah Cutting element for rotary drill bits for deep drilling in earth formations
GB8432587D0 (en) * 1984-12-22 1985-02-06 Nl Petroleum Prod Cutting elements for rotary drill bits
US4852671A (en) * 1987-03-17 1989-08-01 Diamant Boart-Stratabit (Usa) Inc. Diamond cutting element
US5027912A (en) * 1988-07-06 1991-07-02 Baker Hughes Incorporated Drill bit having improved cutter configuration
JP6194600B2 (en) * 2013-02-15 2017-09-13 山形県 Composite plating film and thin grindstone using the same
CN106903807A (en) * 2017-05-03 2017-06-30 金代圣 Diamond bit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106392870A (en) * 2016-12-15 2017-02-15 东旭科技集团有限公司 Grinding tool

Also Published As

Publication number Publication date
GB980799A (en) 1965-01-20

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