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FR990066A - Perfectionnements aux têtes de forets - Google Patents

Perfectionnements aux têtes de forets

Info

Publication number
FR990066A
FR990066A FR990066DA FR990066A FR 990066 A FR990066 A FR 990066A FR 990066D A FR990066D A FR 990066DA FR 990066 A FR990066 A FR 990066A
Authority
FR
France
Prior art keywords
drill heads
drill
heads
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
Other languages
English (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.)
ARMSTRONG PRODUCTS Ltd
Original Assignee
ARMSTRONG PRODUCTS 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 ARMSTRONG PRODUCTS Ltd filed Critical ARMSTRONG PRODUCTS Ltd
Application granted granted Critical
Publication of FR990066A publication Critical patent/FR990066A/fr
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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits

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)
FR990066D 1948-08-30 1949-07-04 Perfectionnements aux têtes de forets Expired FR990066A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB990066X 1948-08-30

Publications (1)

Publication Number Publication Date
FR990066A true FR990066A (fr) 1951-09-17

Family

ID=10845888

Family Applications (1)

Application Number Title Priority Date Filing Date
FR990066D Expired FR990066A (fr) 1948-08-30 1949-07-04 Perfectionnements aux têtes de forets

Country Status (1)

Country Link
FR (1) FR990066A (fr)

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