Method for the controlled maintaining of a distance between the roof and the face in longwall mining operations

Details for Australian Patent Application No. 2008351273 (hide)

Owner RAG AKTIENGESELLSCHAFT

Inventors Mozar, Armin; Junker, Martin

Agent EF WELLINGTON & CO

Pub. Number AU-B-2008351273

PCT Pub. Number WO2009/103304

Filing date 19 February 2008

Wipo publication date 27 August 2009

Acceptance publication date 14 July 2011

International Classifications

E21C 35/24 (2006.01) Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups , or

E21C 41/16 (2006.01) Methods of mining or quarrying

E21D 23/00 (2006.01) Mine roof supports for step-by-step movement, e.g. in combination with provisions for shifting of conveyers, mining machines, or guides therefor

E21D 23/03 (2006.01) Mine roof supports for step-by-step movement, e.g. in combination with provisions for shifting of conveyers, mining machines, or guides therefor

Event Publications

19 August 2010 PCT application entered the National Phase

  PCT publication WO2009/103304 Priority application(s): WO2009/103304

14 July 2011 Application Accepted

  Published as AU-B-2008351273

10 November 2011 Standard Patent Sealed

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