A sub-level caving hydraulic support

Details for Australian Patent Application No. 2003271396 (hide)

Owner Yankuang Group Corporation

Inventors Zhang, Chonghong; Li, Zheng; Huang, Fuchang; Deng, Xihua; Zeng, Mingsheng; Wang, Guofa; Yang, Deyu; Jin, Tai

Agent Davies Collison Cave

Pub. Number AU-B-2003271396

Priority 03111921.2 05.03.03 CN

Filing date 30 December 2003

Wipo publication date 23 September 2004

Acceptance publication date 27 April 2006

International Classifications

E21D 15/48 (2006.01) Working-face supports

E21D 23/04 (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

22 January 2004 Complete Application Filed

  Priority application(s): 03111921.2 05.03.03 CN

23 September 2004 Application Open to Public Inspection

  Published as AU-B-2003271396

27 April 2006 Application Accepted

  Published as AU-B-2003271396

24 August 2006 Standard Patent Sealed

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