FR1392419A - Rock drill - Google Patents

Rock drill

Info

Publication number
FR1392419A
FR1392419A FR973984A FR973984A FR1392419A FR 1392419 A FR1392419 A FR 1392419A FR 973984 A FR973984 A FR 973984A FR 973984 A FR973984 A FR 973984A FR 1392419 A FR1392419 A FR 1392419A
Authority
FR
France
Prior art keywords
rock drill
drill
rock
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
FR973984A
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.)
ELEKTROMEKHANITCHESKY ZD
Original Assignee
ELEKTROMEKHANITCHESKY ZD
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 ELEKTROMEKHANITCHESKY ZD filed Critical ELEKTROMEKHANITCHESKY ZD
Priority to FR973984A priority Critical patent/FR1392419A/en
Application granted granted Critical
Publication of FR1392419A publication Critical patent/FR1392419A/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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/089—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a spring or an additional weight

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)
FR973984A 1964-05-11 1964-05-11 Rock drill Expired FR1392419A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR973984A FR1392419A (en) 1964-05-11 1964-05-11 Rock drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR973984A FR1392419A (en) 1964-05-11 1964-05-11 Rock drill

Publications (1)

Publication Number Publication Date
FR1392419A true FR1392419A (en) 1965-03-12

Family

ID=8829702

Family Applications (1)

Application Number Title Priority Date Filing Date
FR973984A Expired FR1392419A (en) 1964-05-11 1964-05-11 Rock drill

Country Status (1)

Country Link
FR (1) FR1392419A (en)

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