DE119169C - - Google Patents

Info

Publication number
DE119169C
DE119169C DENDAT119169D DE119169DA DE119169C DE 119169 C DE119169 C DE 119169C DE NDAT119169 D DENDAT119169 D DE NDAT119169D DE 119169D A DE119169D A DE 119169DA DE 119169 C DE119169 C DE 119169C
Authority
DE
Germany
Prior art keywords
tube
spring
pipe
ring
modification
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.)
Active
Application number
DENDAT119169D
Other languages
German (de)
English (en)
Publication of DE119169C publication Critical patent/DE119169C/de
Active legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00Drives for drilling, used in the borehole
    • E21B4/06Down-hole impacting means, e.g. hammers
    • E21B4/08Down-hole impacting means, e.g. hammers impact being obtained by gravity only, e.g. with lost-motion connection

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)
DENDAT119169D Active DE119169C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE119169C true DE119169C (enrdf_load_stackoverflow)

Family

ID=388315

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT119169D Active DE119169C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE119169C (enrdf_load_stackoverflow)

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