Pneumatically-powered mine door installation with hydraulic checking system

Details for Australian Patent Application No. 2004202818 (hide)

Owner Jack Kennedy Metal Products & Buildings, Inc.

Inventors Kennedy, John M; Kennedy, William R

Agent EF WELLINGTON & CO

Pub. Number AU-A-2004202818

Priority 10/608900 27.06.03 US

Filing date 25 June 2004

Wipo publication date 13 January 2005

Acceptance publication date 3 April 2008

International Classifications

E05F 015/04 Power-operated mechanisms for wings

E21F 001/10 Ventilation of mines or tunnels

Event Publications

8 July 2004 Complete Application Filed

  Priority application(s): 10/608900 27.06.03 US

13 January 2005 Application Open to Public Inspection

  Published as AU-A-2004202818

27 September 2007 Amendment Made

  The nature of the amendment is: Amend the invention title to read Control system for pneumatically-powered door installation

3 April 2008 Application Accepted

  Published as AU-A-2004202818

31 July 2008 Standard Patent Sealed

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