Earth boring apparatus for sinking shafts and method of excavating a shaft

Details for Australian Patent Application No. 2004291578 (hide)

Owner J.S. Redpath Limited

Inventors Medd, Morris J

Agent Phillips Ormonde Fitzpatrick

Pub. Number AU-B-2004291578

PCT Pub. Number WO2005/049966

Priority 60/523,319 20.11.03 US

Filing date 22 November 2004

Wipo publication date 2 June 2005

Acceptance publication date 23 July 2009

International Classifications

E21D 1/03 (2006.01) Shafts

B07B 1/34 (2006.01) Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like

E21B 23/00 (2006.01) Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells

E21B 23/04 (2006.01) Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells

E21D 5/04 (2006.01) Lining shafts

Event Publications

1 June 2006 PCT application entered the National Phase

  PCT publication WO2005/049966 Priority application(s): WO2005/049966

23 July 2009 Application Accepted

  Published as AU-B-2004291578

19 November 2009 Standard Patent Sealed

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