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AT281728B - Ventilation device, in particular for hammer drill supports - Google Patents

Ventilation device, in particular for hammer drill supports

Info

Publication number
AT281728B
AT281728B AT1166167A AT1166167A AT281728B AT 281728 B AT281728 B AT 281728B AT 1166167 A AT1166167 A AT 1166167A AT 1166167 A AT1166167 A AT 1166167A AT 281728 B AT281728 B AT 281728B
Authority
AT
Austria
Prior art keywords
ventilation device
hammer drill
drill supports
supports
hammer
Prior art date
Application number
AT1166167A
Other languages
German (de)
Original Assignee
Boehler & Co Ag Geb
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 Boehler & Co Ag Geb filed Critical Boehler & Co Ag Geb
Priority to AT1166167A priority Critical patent/AT281728B/en
Priority to DE19681815131 priority patent/DE1815131A1/en
Application granted granted Critical
Publication of AT281728B publication Critical patent/AT281728B/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
    • 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
    • E21B19/086—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 fluid-actuated cylinder

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)
AT1166167A 1967-12-27 1967-12-27 Ventilation device, in particular for hammer drill supports AT281728B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT1166167A AT281728B (en) 1967-12-27 1967-12-27 Ventilation device, in particular for hammer drill supports
DE19681815131 DE1815131A1 (en) 1967-12-27 1968-12-17 Ventilation device, especially for hammer drill supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1166167A AT281728B (en) 1967-12-27 1967-12-27 Ventilation device, in particular for hammer drill supports

Publications (1)

Publication Number Publication Date
AT281728B true AT281728B (en) 1970-05-25

Family

ID=3629980

Family Applications (1)

Application Number Title Priority Date Filing Date
AT1166167A AT281728B (en) 1967-12-27 1967-12-27 Ventilation device, in particular for hammer drill supports

Country Status (2)

Country Link
AT (1) AT281728B (en)
DE (1) DE1815131A1 (en)

Also Published As

Publication number Publication date
DE1815131A1 (en) 1971-10-07

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Legal Events

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