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SE8304638D0 - DOUBLE WIRING CHRONICLE - Google Patents

DOUBLE WIRING CHRONICLE

Info

Publication number
SE8304638D0
SE8304638D0 SE8304638A SE8304638A SE8304638D0 SE 8304638 D0 SE8304638 D0 SE 8304638D0 SE 8304638 A SE8304638 A SE 8304638A SE 8304638 A SE8304638 A SE 8304638A SE 8304638 D0 SE8304638 D0 SE 8304638D0
Authority
SE
Sweden
Prior art keywords
screw threads
diameter
shank
chronicle
bore
Prior art date
Application number
SE8304638A
Other languages
Swedish (sv)
Other versions
SE8304638L (en
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/en
Publication of SE8304638L publication Critical patent/SE8304638L/en

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)

Abstract

A two-piece drill bit 10 for drilling a hole in earth or rock has means for isolating mating screw threads 24, 44 from forces due to bending moments occurring between the shank 12 and the bit head 14. The bit head 14 has a smooth bore 46 of a diameter less than the minor diameter of the screw threads on one side of the threaded bore and a counter bore 42 of a diameter greater than the major diameter of the screw threads on the other. The shank has a locating diameter 22 at one end and a flange 25 with an outer diameter 26 on the other side of the screw threads. The diameters 22 and 26 are such as to locate and engage the bores 46 and 42, respectively, when the screw threads are in threading engagement. <IMAGE>
SE8304638A 1982-08-30 1983-08-26 DOUBLE WIRING CHRONICLE SE8304638L (en)

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 true SE8304638D0 (en) 1983-08-26
SE8304638L SE8304638L (en) 1984-03-01

Family

ID=23633423

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8304638A SE8304638L (en) 1982-08-30 1983-08-26 DOUBLE WIRING CHRONICLE

Country Status (5)

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

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 (en) * 1995-11-04 1997-05-07 Hawera Probst Kg Hartmetall Drilling tool, in particular for processing stone
US6502650B1 (en) * 2000-11-15 2003-01-07 Sandvik Ab Percussive down-the-hole hammer for rock drilling, and a drill bit used therein
KR101631329B1 (en) 2008-01-08 2016-06-16 에스코 코포레이션 Tip for an earth working roll
JP5358492B2 (en) * 2009-09-08 2013-12-04 株式会社ジオ機材 Connection structure for hammering rod
AT509643B1 (en) 2010-04-07 2013-08-15 Dywidag Systems Int Gmbh TWO-PIECE DRILLING TOOL FOR HANDLING OR DRILLING HOLES IN FLOOR OR ROCK MATERIALS
CN109162648B (en) * 2018-09-12 2024-07-09 成都希能能源科技有限公司 Drill bit capable of being released when being blocked
WO2021069657A1 (en) * 2019-10-11 2021-04-15 Sandvik Mining And Construction Tools Ab Shoulder protected drilling assembly

Also Published As

Publication number Publication date
JPS5976394A (en) 1984-05-01
BR8304683A (en) 1984-04-10
SE8304638L (en) 1984-03-01
DE3330025A1 (en) 1984-03-01
GB8322798D0 (en) 1983-09-28
GB2127463A (en) 1984-04-11

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Legal Events

Date Code Title Description
NAV Patent application has lapsed

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