Patent ID: 7374146

Claim:
A hydraulic blowout preventer operator comprising: a closure member; a first piston rod coupled to the closure member; a first operator housing comprising one end coupled and fixed relative to a bonnet and a second end coupled to a head, wherein the first piston rod extends through the bonnet into the first operator housing and is moveable relative to the bonnet during operation to move the closure member; a first piston coupled to the first piston rod and at least partially disposed within the first operator housing, wherein the first piston comprises a first body and a first flange; a second piston rod coupled to the closure member, wherein the second piston rod comprises a longitudinal axis that is parallel to a longitudinal axis of the first piston rod; a second operator housing comprising one end coupled to and fixed relative to the bonnet and a second end coupled to the head, wherein the second piston rod extends through the bonnet into the second operator housing and is moveable relative to the bonnet during operation to move the closure member; and a second piston coupled to the second piston rod and at least partially disposed within the second operator housing; wherein the second piston comprises a second body and a second flange.