FR2099770A5 - - Google Patents

Info

Publication number
FR2099770A5
FR2099770A5 FR7122604A FR7122604A FR2099770A5 FR 2099770 A5 FR2099770 A5 FR 2099770A5 FR 7122604 A FR7122604 A FR 7122604A FR 7122604 A FR7122604 A FR 7122604A FR 2099770 A5 FR2099770 A5 FR 2099770A5
Authority
FR
France
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
FR7122604A
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.)
Gebrueder Boehler and Co AG
Original Assignee
Gebrueder Boehler and Co AG
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 Gebrueder Boehler and Co AG filed Critical Gebrueder Boehler and Co AG
Application granted granted Critical
Publication of FR2099770A5 publication Critical patent/FR2099770A5/fr
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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids

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)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
FR7122604A 1970-06-23 1971-06-22 Expired FR2099770A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT562570A AT310697B (en) 1970-06-23 1970-06-23 Device for discharging drilling dust

Publications (1)

Publication Number Publication Date
FR2099770A5 true FR2099770A5 (en) 1972-03-17

Family

ID=3577843

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7122604A Expired FR2099770A5 (en) 1970-06-23 1971-06-22

Country Status (5)

Country Link
AT (1) AT310697B (en)
BE (1) BE768858A (en)
CH (1) CH521510A (en)
DE (1) DE2129006A1 (en)
FR (1) FR2099770A5 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2758385C3 (en) * 1977-12-28 1981-03-26 Ing. G. Klemm Bohrtechnik GmbH, 57489 Drolshagen Impact drilling device for large holes
DE102016225015A1 (en) * 2016-12-14 2018-06-14 Robert Bosch Gmbh Method for removing drilling dust

Also Published As

Publication number Publication date
DE2129006A1 (en) 1971-12-30
BE768858A (en) 1971-12-22
AT310697B (en) 1973-10-10
CH521510A (en) 1972-04-15

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Legal Events

Date Code Title Description
ST Notification of lapse