ZA919327B - Drill steel - Google Patents

Drill steel

Info

Publication number
ZA919327B
ZA919327B ZA919327A ZA919327A ZA919327B ZA 919327 B ZA919327 B ZA 919327B ZA 919327 A ZA919327 A ZA 919327A ZA 919327 A ZA919327 A ZA 919327A ZA 919327 B ZA919327 B ZA 919327B
Authority
ZA
South Africa
Prior art keywords
drill steel
drill
steel
Prior art date
Application number
ZA919327A
Other languages
English (en)
Inventor
Stanley D Robinson
D Robinson Stanley
Original Assignee
D Robinson Stanley
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 D Robinson Stanley filed Critical D Robinson Stanley
Publication of ZA919327B publication Critical patent/ZA919327B/xx

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/14—Twisting
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/22—Rods or pipes with helical structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (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)
  • Drilling Tools (AREA)
ZA919327A 1990-11-26 1991-11-26 Drill steel ZA919327B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US61783390A 1990-11-26 1990-11-26

Publications (1)

Publication Number Publication Date
ZA919327B true ZA919327B (en) 1993-02-24

Family

ID=24475250

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA919327A ZA919327B (en) 1990-11-26 1991-11-26 Drill steel

Country Status (7)

Country Link
US (1) US5337842A (xx)
AU (1) AU8908291A (xx)
CA (1) CA2096838C (xx)
IE (1) IE914082A1 (xx)
MX (1) MX9102224A (xx)
WO (1) WO1992009381A1 (xx)
ZA (1) ZA919327B (xx)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2694220B1 (fr) * 1992-07-31 1994-10-14 Jacques Ory Méthode pour l'obtention de profils destinés à la fabrication de forêts hélicoïdaux.
BE1007097A5 (fr) * 1992-08-25 1995-03-14 Forges De Courcelles Centre Sa Procede de realisation de pieces a pas helicoidal.
DE19722517A1 (de) * 1997-05-30 1998-12-03 Hawera Probst Gmbh Bohrwerkzeug
US6189632B1 (en) * 1997-06-16 2001-02-20 Brian E. Warden Machined drill steel
US6516904B1 (en) * 1997-07-23 2003-02-11 American Mine Services Mining drill steels and methods of making the same
US6533049B1 (en) * 1997-07-23 2003-03-18 American Mine Services Mining drill steels and methods of making the same
US6367567B1 (en) * 1999-12-17 2002-04-09 Kennametal Pc Inc. Lockable drill steel and chuck assembly
US7247780B2 (en) * 2005-04-01 2007-07-24 Sanders Peter J Wrench tremolo bar for a guitar
CN108252661B (zh) * 2018-01-19 2023-12-22 南通永大管业股份有限公司 一种便于捣入型探矿钻杆

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733943A (en) * 1956-02-07 nater
FR426511A (fr) * 1910-02-23 1911-07-08 Florent Joseph Heuse Bovy Procédé et dispositif pour la torsion des métaux
DE528626C (de) * 1929-09-29 1931-07-01 Zh Rikagaku Kenkyugo Fa Herstellung von Spiralbohrern durch Verwinden genuteter Staebe
US2533227A (en) * 1941-05-31 1950-12-12 Harry W Delaney Apparatus for the manufacture of twist drills
US3117471A (en) * 1962-07-17 1964-01-14 Kenneth L O'connell Method and means for making twist drills
US3421351A (en) * 1967-02-02 1969-01-14 Beaver Precision Prod Method of forming bar screws
AT279998B (de) * 1967-05-09 1970-03-25 Rohde & Doerrenberg Verfahren zum Herstellen von Spiralbohrern od.ähnl Werkzeugen sowie nach dem Verfahren hergestellter Spiralbohrer
FR2355581A1 (fr) * 1976-04-06 1978-01-20 Zazimko Viktor Procede et banc d'etirage de pieces cylindriques tubulaires
US4171634A (en) * 1977-09-29 1979-10-23 Spiral Tubing Corporation Method of making corrugated tubing with graduated pitch
DE3238253A1 (de) * 1981-11-20 1983-05-26 SIG Schweizerische Industrie-Gesellschaft, 8212 Neuhausen am Rheinfall Schallgedaemmtes gestaenge fuer gezaehe
EP0173675A1 (de) * 1984-08-28 1986-03-05 Vereinigte Edelstahlwerke Aktiengesellschaft (Vew) Verfahren und Vorrichtung zur Herstellung von, insbesondere metallischen, Werkstücken, vorzugsweise aus Stahl
SE459680B (sv) * 1984-10-01 1989-07-24 Santrade Ltd Borrstaal
US4898503A (en) * 1988-07-05 1990-02-06 Lockheed Corporation Twist drill
US4945999A (en) * 1989-04-06 1990-08-07 The Charles Machine Works, Inc. Directional rod pusher

Also Published As

Publication number Publication date
CA2096838A1 (en) 1992-05-27
US5337842A (en) 1994-08-16
CA2096838C (en) 1998-06-23
AU8908291A (en) 1992-06-25
IE914082A1 (en) 1992-06-03
MX9102224A (es) 1992-07-08
WO1992009381A1 (en) 1992-06-11

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