A one-piece drill bit for single-pass anchor bolting and single pass drilling apparatus

Details for Australian Patent Application No. 2006287962 (hide)

Owner Sandvik Intellectual Property AB

Inventors Helin, Aimo; Lundberg, Christer; Ravat, Pierre

Agent Griffith Hack

Pub. Number AU-A-2006287962

PCT Pub. Number WO2007/030047

Priority 0501979-9 05.09.05 SE

Filing date 26 June 2006

Wipo publication date 15 March 2007

International Classifications

E21B 10/40 (2006.01) Drilling tools

E21B 7/20 (2006.01) Special methods or apparatus for drilling - Driving or forcing casings or pipes into boreholes, e.g. sinking

E21B 10/46 (2006.01) Drilling tools - characterised by wear resisting parts, e.g. diamond inserts

E21B 10/64 (2006.01) Drilling tools

E21D 21/00 (2006.01) Anchoring-bolts for roof, floor, or shaft-lining protection

Event Publications

21 February 2008 PCT application entered the National Phase

  PCT publication WO2007/030047 Priority application(s): WO2007/030047

15 July 2010 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(a). A direction to request examination has been given for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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