PRESSURE COMPENSATION/CONTROL FOR FAIL-SAFE GATE VALVE

Details for Australian Patent Application No. 2002361801 (hide)

Owner COOPER CAMERON CORPORATION

Inventors HOANG, Loc, G.; KILMOYER, Jim, E.

Pub. Number AU-A-2002361801

PCT Number PCT/US02/40746

PCT Pub. Number WO2003/056127

Priority 10/036,997 21.12.01 US

Filing date 18 December 2002

Wipo publication date 15 July 2003

International Classifications

E21B 034/00 Valve arrangements for boreholes or wells

E21B 021/10 Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

F16K 031/122 Operating means - the fluid acting on a piston

Event Publications

10 April 2003 Complete Application Filed

  Priority application(s): 10/036,997 21.12.01 US

4 September 2003 Application Open to Public Inspection

  Published as AU-A-2002361801

9 September 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(f)/See Reg. 8.3(3). Examination has not yet been requested or directed for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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