Pump device for the hydraulic actuation of a valve
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United States of America Patent
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Issued Date -
Jul 20, 2006
app pub date -
Jul 16, 2004
filing date -
Jul 17, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Pump device for hydraulically activating a valve in particular used for oil and gas exploration wherein such a valve may be a safety valve assigned to a riser or a tree, said pump device including a piston cylinder unit from which pressurized hydraulic fluid can be pumped in direction to the valve. To improve such a pump device so that the pressure of the hydraulic fluid is produced in particular at the corresponding site and near to the valve and is safe and constructed in a simple way an electrical drive means is movably connected to a piston of the piston cylinder unit for alternating movement in axial direction of the piston within the cylinder.
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