FR455465A - Speed reducer for electrically driven ramming devices - Google Patents

Speed reducer for electrically driven ramming devices

Info

Publication number
FR455465A
FR455465A FR455465DA FR455465A FR 455465 A FR455465 A FR 455465A FR 455465D A FR455465D A FR 455465DA FR 455465 A FR455465 A FR 455465A
Authority
FR
France
Prior art keywords
speed reducer
electrically driven
ramming devices
driven ramming
devices
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 Engrenages et Reducteurs Messian Durand SA
Original Assignee
Compagnie Engrenages et Reducteurs Messian Durand 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 Compagnie Engrenages et Reducteurs Messian Durand SA filed Critical Compagnie Engrenages et Reducteurs Messian Durand SA
Application granted granted Critical
Publication of FR455465A publication Critical patent/FR455465A/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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/04—Electric drives

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)
FR455465D 1913-03-12 1913-03-12 Speed reducer for electrically driven ramming devices Expired FR455465A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR455465T 1913-03-12

Publications (1)

Publication Number Publication Date
FR455465A true FR455465A (en) 1913-08-01

Family

ID=1495338

Family Applications (1)

Application Number Title Priority Date Filing Date
FR455465D Expired FR455465A (en) 1913-03-12 1913-03-12 Speed reducer for electrically driven ramming devices

Country Status (1)

Country Link
FR (1) FR455465A (en)

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