FR664445A - Sand pipe for rock drills - Google Patents

Sand pipe for rock drills

Info

Publication number
FR664445A
FR664445A FR664445DA FR664445A FR 664445 A FR664445 A FR 664445A FR 664445D A FR664445D A FR 664445DA FR 664445 A FR664445 A FR 664445A
Authority
FR
France
Prior art keywords
sand pipe
rock drills
drills
rock
sand
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.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand Co
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 Ingersoll Rand Co filed Critical Ingersoll Rand Co
Application granted granted Critical
Publication of FR664445A publication Critical patent/FR664445A/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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/12—Underwater drilling
    • E21B7/136—Underwater drilling from non-buoyant support

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
FR664445D 1928-03-17 1928-11-22 Sand pipe for rock drills Expired FR664445A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US664445XA 1928-03-17 1928-03-17

Publications (1)

Publication Number Publication Date
FR664445A true FR664445A (en) 1929-09-03

Family

ID=22069533

Family Applications (1)

Application Number Title Priority Date Filing Date
FR664445D Expired FR664445A (en) 1928-03-17 1928-11-22 Sand pipe for rock drills

Country Status (1)

Country Link
FR (1) FR664445A (en)

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