AT350002B - IMMEDIATE COMPRESSED AIR DEVICE FOR THE FORMATION OF TUBE-SHAPED VACUUMS IN THE FLOOR - Google Patents

IMMEDIATE COMPRESSED AIR DEVICE FOR THE FORMATION OF TUBE-SHAPED VACUUMS IN THE FLOOR

Info

Publication number
AT350002B
AT350002B AT922577A AT922577A AT350002B AT 350002 B AT350002 B AT 350002B AT 922577 A AT922577 A AT 922577A AT 922577 A AT922577 A AT 922577A AT 350002 B AT350002 B AT 350002B
Authority
AT
Austria
Prior art keywords
vacuums
floor
formation
tube
shaped
Prior art date
Application number
AT922577A
Other languages
German (de)
Other versions
ATA922577A (en
Inventor
Alexandr Dmitrievich Kostylev
Nikolai Prokhorovich Chepurnoi
Vladimir Dmitrievich Plavskikh
Evgeny Nikolaevich Cherednikov
Original Assignee
Inst Gornogo Dela Sibirskogo O
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 Inst Gornogo Dela Sibirskogo O filed Critical Inst Gornogo Dela Sibirskogo O
Publication of ATA922577A publication Critical patent/ATA922577A/en
Application granted granted Critical
Publication of AT350002B publication Critical patent/AT350002B/en

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
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers
    • E21B4/145—Fluid operated hammers of the self propelled-type, e.g. with a reverse mode to retract the device from the hole

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)
  • Earth Drilling (AREA)
AT922577A 1977-12-31 1977-12-22 IMMEDIATE COMPRESSED AIR DEVICE FOR THE FORMATION OF TUBE-SHAPED VACUUMS IN THE FLOOR AT350002B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB54397/77A GB1575650A (en) 1977-12-31 1977-12-31 Percussive drilling devices

Publications (2)

Publication Number Publication Date
ATA922577A ATA922577A (en) 1978-09-15
AT350002B true AT350002B (en) 1979-05-10

Family

ID=10470880

Family Applications (1)

Application Number Title Priority Date Filing Date
AT922577A AT350002B (en) 1977-12-31 1977-12-22 IMMEDIATE COMPRESSED AIR DEVICE FOR THE FORMATION OF TUBE-SHAPED VACUUMS IN THE FLOOR

Country Status (4)

Country Link
AT (1) AT350002B (en)
CH (1) CH629279A5 (en)
FR (1) FR2415417A7 (en)
GB (1) GB1575650A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0372225A3 (en) * 1988-12-05 1992-05-27 Schmidt, Paul, Dipl.-Ing. Boring ram

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0372225A3 (en) * 1988-12-05 1992-05-27 Schmidt, Paul, Dipl.-Ing. Boring ram

Also Published As

Publication number Publication date
FR2415417A7 (en) 1979-08-17
ATA922577A (en) 1978-09-15
CH629279A5 (en) 1982-04-15
GB1575650A (en) 1980-09-24

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee