DE270185C - - Google Patents

Info

Publication number
DE270185C
DE270185C DENDAT270185D DE270185DA DE270185C DE 270185 C DE270185 C DE 270185C DE NDAT270185 D DENDAT270185 D DE NDAT270185D DE 270185D A DE270185D A DE 270185DA DE 270185 C DE270185 C DE 270185C
Authority
DE
Germany
Prior art keywords
cutting edges
circles
notches
drill
blow
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
DENDAT270185D
Other languages
German (de)
English (en)
Publication of DE270185C publication Critical patent/DE270185C/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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/58—Chisel-type inserts

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)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Earth Drilling (AREA)
DENDAT270185D Active DE270185C (cs)

Publications (1)

Publication Number Publication Date
DE270185C true DE270185C (cs)

Family

ID=526958

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT270185D Active DE270185C (cs)

Country Status (1)

Country Link
DE (1) DE270185C (cs)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2689109A (en) * 1948-04-30 1954-09-14 Joy Mfg Co Rock drill bit
FR2492450A1 (fr) * 1980-10-21 1982-04-23 Christensen Inc Trepan de forage rotatif pour forages profonds
FR2503242A1 (fr) * 1981-04-01 1982-10-08 Christensen Inc Trepan de forage rotatif pour forages profonds

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2689109A (en) * 1948-04-30 1954-09-14 Joy Mfg Co Rock drill bit
FR2492450A1 (fr) * 1980-10-21 1982-04-23 Christensen Inc Trepan de forage rotatif pour forages profonds
FR2503242A1 (fr) * 1981-04-01 1982-10-08 Christensen Inc Trepan de forage rotatif pour forages profonds
DE3113109A1 (de) * 1981-04-01 1982-11-04 Christensen, Inc., 84115 Salt Lake City, Utah Drehbohrmeissel fuer tiefbohrungen

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