SE8802648L - Drill crown for rock drilling - has rotary motion from tube transmitted to crown shaft via gripping device - Google Patents

Drill crown for rock drilling - has rotary motion from tube transmitted to crown shaft via gripping device

Info

Publication number
SE8802648L
SE8802648L SE8802648A SE8802648A SE8802648L SE 8802648 L SE8802648 L SE 8802648L SE 8802648 A SE8802648 A SE 8802648A SE 8802648 A SE8802648 A SE 8802648A SE 8802648 L SE8802648 L SE 8802648L
Authority
SE
Sweden
Prior art keywords
crown
rotary motion
gripping device
shaft via
rock drilling
Prior art date
Application number
SE8802648A
Other languages
Swedish (sv)
Other versions
SE8802648D0 (en
SE8802648A0 (en
Inventor
K Larsson
P Nava
Original Assignee
Sandvik Ab
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 Sandvik Ab filed Critical Sandvik Ab
Priority to SE8802648A priority Critical patent/SE8802648A0/en
Publication of SE8802648D0 publication Critical patent/SE8802648D0/en
Publication of SE8802648L publication Critical patent/SE8802648L/en
Publication of SE8802648A0 publication Critical patent/SE8802648A0/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
    • E21B10/36—Percussion drill bits
    • E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids
    • 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
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids

Abstract

Rotary motion from the tube (13) is transmitted to the crown shaft (12) via a gripping device (26). There is a slot (28) carries mining medium via the channel (29) to the drill crown.
SE8802648A 1988-07-15 1988-07-15 Drill bit and drill string component including a drill bit SE8802648A0 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8802648A SE8802648A0 (en) 1988-07-15 1988-07-15 Drill bit and drill string component including a drill bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8802648A SE8802648A0 (en) 1988-07-15 1988-07-15 Drill bit and drill string component including a drill bit

Publications (3)

Publication Number Publication Date
SE8802648D0 SE8802648D0 (en) 1988-07-15
SE8802648L true SE8802648L (en) 1990-01-16
SE8802648A0 SE8802648A0 (en) 1990-01-16

Family

ID=20372922

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8802648A SE8802648A0 (en) 1988-07-15 1988-07-15 Drill bit and drill string component including a drill bit

Country Status (1)

Country Link
SE (1) SE8802648A0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9938768B2 (en) 2013-05-17 2018-04-10 Epiroc Drilling Tools Aktiebolag Device and system for percussion rock drilling

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9938768B2 (en) 2013-05-17 2018-04-10 Epiroc Drilling Tools Aktiebolag Device and system for percussion rock drilling

Also Published As

Publication number Publication date
SE8802648D0 (en) 1988-07-15
SE8802648A0 (en) 1990-01-16

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Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 8802648-9

Effective date: 19930427