SE8304638L - Tvadelad borrkrona - Google Patents

Tvadelad borrkrona

Info

Publication number
SE8304638L
SE8304638L SE8304638A SE8304638A SE8304638L SE 8304638 L SE8304638 L SE 8304638L SE 8304638 A SE8304638 A SE 8304638A SE 8304638 A SE8304638 A SE 8304638A SE 8304638 L SE8304638 L SE 8304638L
Authority
SE
Sweden
Prior art keywords
screw threads
diameter
shank
chronicle
bore
Prior art date
Application number
SE8304638A
Other languages
English (en)
Swedish (sv)
Other versions
SE8304638D0 (sv
Inventor
R W Hughes
Original Assignee
Ingersoll Rand Co
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 Ingersoll Rand Co filed Critical Ingersoll Rand Co
Publication of SE8304638D0 publication Critical patent/SE8304638D0/xx
Publication of SE8304638L publication Critical patent/SE8304638L/

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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded
    • E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods

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)
SE8304638A 1982-08-30 1983-08-26 Tvadelad borrkrona SE8304638L (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US41254382A 1982-08-30 1982-08-30

Publications (2)

Publication Number Publication Date
SE8304638D0 SE8304638D0 (sv) 1983-08-26
SE8304638L true SE8304638L (sv) 1984-03-01

Family

ID=23633423

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8304638A SE8304638L (sv) 1982-08-30 1983-08-26 Tvadelad borrkrona

Country Status (5)

Country Link
JP (1) JPS5976394A ( )
BR (1) BR8304683A ( )
DE (1) DE3330025A1 ( )
GB (1) GB2127463A ( )
SE (1) SE8304638L ( )

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4540056A (en) * 1984-05-03 1985-09-10 Inco Limited Cutter assembly
DE3819462C1 (en) * 1988-06-08 1990-05-23 Johannes 4130 Moers De Radtke Drilling head for making small-diameter and large-diameter boreholes
US4919221A (en) * 1989-04-06 1990-04-24 Numa Tool Company Impact drill bit assembly and replaceable parts thereof
DE3916505C1 (en) * 1989-05-20 1990-08-23 Johannes 4130 Moers De Radtke Drilling tool for producing large and small boreholes - includes bolts on replaceable holder in which there are nodular cutting inserts
DE3941609C1 (en) * 1989-12-16 1991-10-24 Johannes 4130 Moers De Radtke Boring head for mining - has head and shaft provided with fluid flushing channels and tapering surface on head
US5322139A (en) * 1993-07-28 1994-06-21 Rose James K Loose crown underreamer apparatus
DE19541163A1 (de) * 1995-11-04 1997-05-07 Hawera Probst Kg Hartmetall Bohrwerkzeug, insbesondere zur Bearbeitung von Gestein
US6502650B1 (en) * 2000-11-15 2003-01-07 Sandvik Ab Percussive down-the-hole hammer for rock drilling, and a drill bit used therein
BRPI0907252A2 (pt) 2008-01-08 2019-08-27 Esco Corp ponteira para cilindro de trabalhar a terra
JP5358492B2 (ja) * 2009-09-08 2013-12-04 株式会社ジオ機材 打撃削孔用ロッドの連結構造
AT509643B1 (de) 2010-04-07 2013-08-15 Dywidag Systems Int Gmbh Zweiteiliges bohrwerkzeug zum schlag- oder drehschlagbohren von löchern in boden- oder gesteinsmaterial
CN109162648A (zh) * 2018-09-12 2019-01-08 成都希能能源科技有限公司 一种遇卡埋可丢手钻头
EP4041980A1 (en) * 2019-10-11 2022-08-17 Sandvik Mining and Construction Tools AB Shoulder protected drilling assembly

Also Published As

Publication number Publication date
BR8304683A (pt) 1984-04-10
GB8322798D0 (en) 1983-09-28
SE8304638D0 (sv) 1983-08-26
DE3330025A1 (de) 1984-03-01
JPS5976394A (ja) 1984-05-01
GB2127463A (en) 1984-04-11

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