AT301424B - Twist or twist drill - Google Patents

Twist or twist drill

Info

Publication number
AT301424B
AT301424B AT177570A AT177570A AT301424B AT 301424 B AT301424 B AT 301424B AT 177570 A AT177570 A AT 177570A AT 177570 A AT177570 A AT 177570A AT 301424 B AT301424 B AT 301424B
Authority
AT
Austria
Prior art keywords
twist
drill
twist drill
Prior art date
Application number
AT177570A
Other languages
German (de)
Inventor
Franz Chromy
Original Assignee
Hilti Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hilti Ag filed Critical Hilti Ag
Application granted granted Critical
Publication of AT301424B publication Critical patent/AT301424B/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • E21B10/445—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts percussion type, e.g. for masonry
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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)
  • Drilling Tools (AREA)
AT177570A 1969-04-28 1970-02-26 Twist or twist drill AT301424B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691921677 DE1921677B2 (en) 1969-04-28 1969-04-28 ROTARY TURN DRILL

Publications (1)

Publication Number Publication Date
AT301424B true AT301424B (en) 1972-09-11

Family

ID=5732675

Family Applications (1)

Application Number Title Priority Date Filing Date
AT177570A AT301424B (en) 1969-04-28 1970-02-26 Twist or twist drill

Country Status (6)

Country Link
US (1) US3674101A (en)
AT (1) AT301424B (en)
CH (1) CH508461A (en)
DE (1) DE1921677B2 (en)
FR (1) FR2042136A5 (en)
GB (1) GB1270347A (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4143723A (en) * 1977-10-04 1979-03-13 Schmotzer Norman H Carbide tipped drill bit for boring holes in concrete and steel
US4503920A (en) * 1981-08-10 1985-03-12 Burke Clement Masonry bit
DE3538191C2 (en) * 1985-10-26 1996-09-19 Hilti Ag Rock drill
DE3540355C2 (en) * 1985-11-14 1996-01-11 Duss Maschf Drill for rotary drilling
US5288183A (en) * 1986-08-18 1994-02-22 Black & Decker Inc. Self-centering drill bit with pilot tip
GB8624430D0 (en) * 1986-10-11 1986-11-12 Waddell G Piloted drill bit
DE3742661A1 (en) * 1987-12-16 1989-07-13 Hawera Probst Kg Hartmetall ROCK DRILL
US5011342A (en) * 1988-03-14 1991-04-30 501 Greenfield Industries, Inc. Twist drill
DE3825107C2 (en) * 1988-07-23 1996-07-11 Hilti Ag Rock drill with cutting insert
TW299385B (en) 1994-12-12 1997-03-01 Black & Decker Inc Cutting tools for drilling concrete, aggregate, masonry or the like materials
US5918105A (en) 1994-12-12 1999-06-29 Black & Decker Inc. Cutting tools for drilling concrete, aggregate, masonry or the like materials
GB2303810A (en) * 1995-07-29 1997-03-05 Black & Decker Inc Masonry drill bit
US5641028A (en) * 1995-08-10 1997-06-24 Black & Decker Inc. Drill bit with debris conveying flute
GB2318072A (en) * 1996-09-21 1998-04-15 Plansee Tizit Gmbh Masonry bit
US5967712A (en) * 1998-11-03 1999-10-19 Kennametal Inc. Cutting tool for machining bores in materials having spring-back
DE29902665U1 (en) * 1999-02-15 1999-04-29 Drebo Werkzeugfab Gmbh Stone drill
DE10024433A1 (en) * 2000-05-19 2001-11-29 Hawera Probst Gmbh Rock drill
DE10351183A1 (en) * 2003-11-03 2005-06-02 Illinois Tool Works Inc., Glenview rock drill
US7237986B2 (en) 2004-08-09 2007-07-03 Black & Decker Inc. High speed metal drill bit
DE102007000848A1 (en) * 2007-10-11 2009-04-23 Hilti Aktiengesellschaft self-tapping
US10507534B2 (en) 2016-03-17 2019-12-17 O-Tags, Inc. Systems, methods, and apparatus for reliably installing survey tags

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1007037A (en) * 1911-02-25 1911-10-24 Allan J Macdonald Drill.
DE584358C (en) * 1932-10-19 1933-09-18 Siemens Schuckertwerke Akt Ges Rock drill
US2230645A (en) * 1938-02-01 1941-02-04 Western Electric Co Drill
US2646701A (en) * 1949-12-27 1953-07-28 Peter A Letien Stepped edge cutting tool
US2673714A (en) * 1950-08-05 1954-03-30 John M Hargrave Rock or masonry drill
US2879036A (en) * 1956-06-25 1959-03-24 Philip T Wheeler Masonry drill
US3447616A (en) * 1966-12-29 1969-06-03 Zigmund E Granat Drills
US3460409A (en) * 1967-05-10 1969-08-12 Allied Machine & Eng Corp Chip breaker for spade drill

Also Published As

Publication number Publication date
GB1270347A (en) 1972-04-12
US3674101A (en) 1972-07-04
CH508461A (en) 1971-06-15
DE1921677A1 (en) 1970-11-05
FR2042136A5 (en) 1971-02-05
DE1921677B2 (en) 1977-09-29

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee