FR971909A - Improvements to rock drilling tools - Google Patents

Improvements to rock drilling tools

Info

Publication number
FR971909A
FR971909A FR971909DA FR971909A FR 971909 A FR971909 A FR 971909A FR 971909D A FR971909D A FR 971909DA FR 971909 A FR971909 A FR 971909A
Authority
FR
France
Prior art keywords
rock drilling
drilling tools
tools
rock
drilling
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
French (fr)
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.)
Compagnie Ingersoll Rand
Original Assignee
Compagnie Ingersoll Rand
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 Compagnie Ingersoll Rand filed Critical Compagnie Ingersoll Rand
Application granted granted Critical
Publication of FR971909A publication Critical patent/FR971909A/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
    • E21B10/36—Percussion drill 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)
FR971909D 1940-10-11 1940-10-11 Improvements to rock drilling tools Expired FR971909A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR971909T 1940-10-11

Publications (1)

Publication Number Publication Date
FR971909A true FR971909A (en) 1951-01-23

Family

ID=9515568

Family Applications (1)

Application Number Title Priority Date Filing Date
FR971909D Expired FR971909A (en) 1940-10-11 1940-10-11 Improvements to rock drilling tools

Country Status (1)

Country Link
FR (1) FR971909A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2461804A1 (en) * 1979-06-13 1981-02-06 Inst Gornogo Dela Sibirskogo O DRILLING TOOL FOR PERCUSSION APPARATUS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2461804A1 (en) * 1979-06-13 1981-02-06 Inst Gornogo Dela Sibirskogo O DRILLING TOOL FOR PERCUSSION APPARATUS

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