GB2055411B - Cutting picks - Google Patents

Cutting picks

Info

Publication number
GB2055411B
GB2055411B GB7927536A GB7927536A GB2055411B GB 2055411 B GB2055411 B GB 2055411B GB 7927536 A GB7927536 A GB 7927536A GB 7927536 A GB7927536 A GB 7927536A GB 2055411 B GB2055411 B GB 2055411B
Authority
GB
United Kingdom
Prior art keywords
cutting picks
picks
cutting
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB7927536A
Other versions
GB2055411A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Land & Marine Eng Ltd
Original Assignee
Land & Marine Eng Ltd
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 Land & Marine Eng Ltd filed Critical Land & Marine Eng Ltd
Priority to GB7927536A priority Critical patent/GB2055411B/en
Publication of GB2055411A publication Critical patent/GB2055411A/en
Application granted granted Critical
Publication of GB2055411B publication Critical patent/GB2055411B/en
Expired legal-status Critical Current

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
    • E21B10/006—Drill bits providing a cutting edge which is self-renewable during drilling
    • 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
    • E21B10/58—Chisel-type inserts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor
    • E21C35/183—Mining picks; Holders therefor with inserts or layers of wear-resisting material
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor
    • E21C35/183—Mining picks; Holders therefor with inserts or layers of wear-resisting material
    • E21C35/1833—Multiple inserts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
GB7927536A 1979-08-07 1979-08-07 Cutting picks Expired GB2055411B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7927536A GB2055411B (en) 1979-08-07 1979-08-07 Cutting picks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7927536A GB2055411B (en) 1979-08-07 1979-08-07 Cutting picks

Publications (2)

Publication Number Publication Date
GB2055411A GB2055411A (en) 1981-03-04
GB2055411B true GB2055411B (en) 1983-01-12

Family

ID=10507054

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7927536A Expired GB2055411B (en) 1979-08-07 1979-08-07 Cutting picks

Country Status (1)

Country Link
GB (1) GB2055411B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4674802A (en) * 1982-09-17 1987-06-23 Kennametal, Inc Multi-insert cutter bit
FR2666843B1 (en) * 1990-09-14 1992-12-24 Total Petroles SIZE OF SELF-SHARPENING DRILLING TOOL.
US7624818B2 (en) * 2004-02-19 2009-12-01 Baker Hughes Incorporated Earth boring drill bits with casing component drill out capability and methods of use

Also Published As

Publication number Publication date
GB2055411A (en) 1981-03-04

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee