Hydraulic actuator

Details Hydraulic actuator Hydraulic actuator

F - Mech Eng,Light,Heat,Weapons

15

B

138/86

F15B 15/24 (2006.01) E21B 23/12 (2006.01)

Patent

CA 1131545

ABSTRACT A spring cushioned static seal hydraulically operated actuator is disclosed which contains a hydraulically driven piston arranged to reciprocate in a chamber. A spring couples the piston to a rotatable shaft which limits the torque placed on the shaft by the piston in its drive stroke. A return spring functions to return the piston and drive spring to their initial positions upon release of the hydraulic drive applied to the piston. A static seal on the piston seals at the completion of the drive stroke of the piston. The actuator may be used to operate a subsea diverter to direct "pump down" or through flow line (TFL tools) through wye-branched flow passageways formed in a diverter body member located on a submerged well head.

317345

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