DE292021C - - Google Patents

Info

Publication number
DE292021C
DE292021C DENDAT292021D DE292021DA DE292021C DE 292021 C DE292021 C DE 292021C DE NDAT292021 D DENDAT292021 D DE NDAT292021D DE 292021D A DE292021D A DE 292021DA DE 292021 C DE292021 C DE 292021C
Authority
DE
Germany
Prior art keywords
drill
piston
relocating
transfer
movement
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
DENDAT292021D
Other languages
German (de)
English (en)
Publication of DE292021C publication Critical patent/DE292021C/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)
DENDAT292021D Active DE292021C (zh)

Publications (1)

Publication Number Publication Date
DE292021C true DE292021C (zh)

Family

ID=546843

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT292021D Active DE292021C (zh)

Country Status (1)

Country Link
DE (1) DE292021C (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6174115B1 (en) * 1997-03-28 2001-01-16 Sodick Co., Ltd. Spindle for machine tools

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6174115B1 (en) * 1997-03-28 2001-01-16 Sodick Co., Ltd. Spindle for machine tools

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