GB1270347A - Twist drill - Google Patents

Twist drill

Info

Publication number
GB1270347A
GB1270347A GB02106/70A GB1210670A GB1270347A GB 1270347 A GB1270347 A GB 1270347A GB 02106/70 A GB02106/70 A GB 02106/70A GB 1210670 A GB1210670 A GB 1210670A GB 1270347 A GB1270347 A GB 1270347A
Authority
GB
United Kingdom
Prior art keywords
drill
extension
notches
cutting edge
drilling
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.)
Expired
Application number
GB02106/70A
Other languages
English (en)
Inventor
Franz Chromy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
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
Publication of GB1270347A publication Critical patent/GB1270347A/en
Expired 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
    • E21B10/44—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 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)
  • Drilling Tools (AREA)
GB02106/70A 1969-04-28 1970-03-13 Twist drill Expired GB1270347A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691921677 DE1921677B2 (de) 1969-04-28 1969-04-28 Drehschlag-wendelbohrer

Publications (1)

Publication Number Publication Date
GB1270347A true GB1270347A (en) 1972-04-12

Family

ID=5732675

Family Applications (1)

Application Number Title Priority Date Filing Date
GB02106/70A Expired GB1270347A (en) 1969-04-28 1970-03-13 Twist drill

Country Status (6)

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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2195564A (en) * 1986-10-11 1988-04-13 George Waddell Piloted drill tip
EP0761927A1 (de) 1995-07-29 1997-03-12 Black & Decker Inc. Schneideinsatz für Mauerwerk
US5690003A (en) * 1995-08-10 1997-11-25 Black & Decker Inc. Method of forming a drill bit with debris conveying flute
GB2318072A (en) * 1996-09-21 1998-04-15 Plansee Tizit Gmbh Masonry bit
US5918105A (en) 1994-12-12 1999-06-29 Black & Decker Inc. Cutting tools for drilling concrete, aggregate, masonry or the like materials
US6174111B1 (en) 1994-12-12 2001-01-16 Black & Decker Inc. Cutting tools for drilling concrete, aggregate, masonry or the like materials
US7237986B2 (en) 2004-08-09 2007-07-03 Black & Decker Inc. High speed metal drill bit

Families Citing this family (14)

* 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 (de) * 1985-10-26 1996-09-19 Hilti Ag Gesteinsbohrer
DE3540355C2 (de) * 1985-11-14 1996-01-11 Duss Maschf Bohrer zum drehschlagenden Bohren
US5288183A (en) * 1986-08-18 1994-02-22 Black & Decker Inc. Self-centering drill bit with pilot tip
DE3742661A1 (de) * 1987-12-16 1989-07-13 Hawera Probst Kg Hartmetall Gesteinsbohrer
US5011342A (en) * 1988-03-14 1991-04-30 501 Greenfield Industries, Inc. Twist drill
DE3825107C2 (de) * 1988-07-23 1996-07-11 Hilti Ag Gesteinsbohrer mit Schneidplatte
US5967712A (en) * 1998-11-03 1999-10-19 Kennametal Inc. Cutting tool for machining bores in materials having spring-back
DE29902665U1 (de) * 1999-02-15 1999-04-29 Drebo Werkzeugfab Gmbh Steinbohrer
DE10024433A1 (de) 2000-05-19 2001-11-29 Hawera Probst Gmbh Gesteinsbohrer
DE10351183A1 (de) * 2003-11-03 2005-06-02 Illinois Tool Works Inc., Glenview Gesteinsbohrer
DE102007000848A1 (de) * 2007-10-11 2009-04-23 Hilti Aktiengesellschaft Selbstbohrschraube
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 (de) * 1932-10-19 1933-09-18 Siemens Schuckertwerke Akt Ges Gesteinsdrehbohrer
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

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2195564A (en) * 1986-10-11 1988-04-13 George Waddell Piloted drill tip
GB2195564B (en) * 1986-10-11 1991-03-27 George Waddell Piloted drill bit.
US5918105A (en) 1994-12-12 1999-06-29 Black & Decker Inc. Cutting tools for drilling concrete, aggregate, masonry or the like materials
US6174111B1 (en) 1994-12-12 2001-01-16 Black & Decker Inc. Cutting tools for drilling concrete, aggregate, masonry or the like materials
EP0761927A1 (de) 1995-07-29 1997-03-12 Black & Decker Inc. Schneideinsatz für Mauerwerk
US6102634A (en) * 1995-07-29 2000-08-15 Black & Decker Inc. Masonry drill bit
EP1314850A1 (de) * 1995-07-29 2003-05-28 Black & Decker Inc. Wendelbohrer für Gestein
US5690003A (en) * 1995-08-10 1997-11-25 Black & Decker Inc. Method of forming a drill bit with debris conveying flute
GB2318072A (en) * 1996-09-21 1998-04-15 Plansee Tizit Gmbh Masonry bit
US6021857A (en) * 1996-09-21 2000-02-08 Black & Decker Inc. Drill bit
US7237986B2 (en) 2004-08-09 2007-07-03 Black & Decker Inc. High speed metal drill bit

Also Published As

Publication number Publication date
US3674101A (en) 1972-07-04
DE1921677A1 (de) 1970-11-05
DE1921677B2 (de) 1977-09-29
AT301424B (de) 1972-09-11
FR2042136A5 (de) 1971-02-05
CH508461A (de) 1971-06-15

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