Differential screw assembly for varying torque for valve

Details for Australian Patent Application No. 2012201834 (hide)

Owner Vetco Gray Inc.

Inventors Olvera, Alfred; Udipi, Mahesha; Krolczyk, Raymond

Agent Phillips Ormonde Fitzpatrick

Pub. Number AU-A-2012201834

Priority 13/075,348 30.03.11 US

Filing date 28 March 2012

Wipo publication date 18 October 2012

International Classifications

F16K 31/50 Operating means

E21B 34/00 Valve arrangements for boreholes or wells

F16K 3/30 Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing

Event Publications

12 April 2012 Complete Application Filed

  Priority application(s): 13/075,348 30.03.11 US

18 October 2012 Application Open to Public Inspection

  Published as AU-A-2012201834

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