DE214366C - - Google Patents

Info

Publication number
DE214366C
DE214366C DENDAT214366D DE214366DA DE214366C DE 214366 C DE214366 C DE 214366C DE NDAT214366 D DENDAT214366 D DE NDAT214366D DE 214366D A DE214366D A DE 214366DA DE 214366 C DE214366 C DE 214366C
Authority
DE
Germany
Prior art keywords
piston
cylinder
helical
drill
coupling half
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
DENDAT214366D
Other languages
German (de)
English (en)
Publication of DE214366C publication Critical patent/DE214366C/de
Active 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
    • E21B6/00—Drives for drilling with combined rotary and percussive action
    • E21B6/06—Drives for drilling with combined rotary and percussive action the rotation being intermittent, e.g. obtained by ratchet device

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)
  • Earth Drilling (AREA)
DENDAT214366D Active DE214366C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
DE214366C true DE214366C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=475950

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT214366D Active DE214366C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
DE (1) DE214366C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2496027A (en) * 1944-10-23 1950-01-31 Trapet Maurice Portable tool with swivel head

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2496027A (en) * 1944-10-23 1950-01-31 Trapet Maurice Portable tool with swivel head

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