Torsion spring connections for a downhole flapper

Details for Australian Patent Application No. 2003268589 (hide)

Owner Baker Hughes Incorporated

Inventors Rawson, Michael S; Williams, Ronald D

Agent Freehills

Pub. Number AU-B-2003268589

Parent 769167

Filing date 10 December 2003

Wipo publication date 22 January 2004

Acceptance publication date 31 May 2007

International Classifications

E21B 34/06 (2006.01) Valve arrangements for boreholes or wells

F16K 15/03 (2006.01) Functional types

F16K 15/12 (2006.01) Functional types

Event Publications

8 January 2004 Complete Application Filed

22 January 2004 Application Open to Public Inspection

  Published as AU-B-2003268589

31 May 2007 Application Accepted

  Published as AU-B-2003268589

27 September 2007 Standard Patent Sealed

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