DE194764C - - Google Patents

Info

Publication number
DE194764C
DE194764C DENDAT194764D DE194764DA DE194764C DE 194764 C DE194764 C DE 194764C DE NDAT194764 D DENDAT194764 D DE NDAT194764D DE 194764D A DE194764D A DE 194764DA DE 194764 C DE194764 C DE 194764C
Authority
DE
Germany
Prior art keywords
extension
chisels
main
chisel
shaft
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
DENDAT194764D
Other languages
German (de)
English (en)
Publication of DE194764C publication Critical patent/DE194764C/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
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
    • E21B10/322—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools cutter shifted by fluid pressure

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)
DENDAT194764D Active DE194764C (enExample)

Publications (1)

Publication Number Publication Date
DE194764C true DE194764C (enExample)

Family

ID=457873

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT194764D Active DE194764C (enExample)

Country Status (1)

Country Link
DE (1) DE194764C (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126065A (en) * 1964-03-24 Chadderdon
US5791409A (en) * 1996-09-09 1998-08-11 Baker Hughes Incorporated Hydro-mechanical multi-string cutter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126065A (en) * 1964-03-24 Chadderdon
US5791409A (en) * 1996-09-09 1998-08-11 Baker Hughes Incorporated Hydro-mechanical multi-string cutter

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