Pumps – Motor driven – Fluid motor
Reexamination Certificate
2006-10-10
2011-12-27
Kramer, Devon C (Department: 3746)
Pumps
Motor driven
Fluid motor
C417S046000, C417S904000, C060S414000, C092S1650PR, C092S18100P
Reexamination Certificate
active
08083499
ABSTRACT:
A hydraulic cylinder assembly for a fluid pump including a cylinder, a bearing attached to an approximate first end of the cylinder, a rod slideably mounted within the bearing, and a piston located about an end of the rod in the cylinder opposite the bearing. A central axis of the rod is offset from, and parallel to, a centerline of the cylinder to impede a rotation of the piston about the rod. The hydraulic cylinder assembly further including a hydraulic pump fluidly connected to the cylinder, the pump configured to provide a hydraulic pressure to the cylinder during an up-stroke of the piston and rod and the pump further configured to generate electricity on the down-stroke of the piston and rod.
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Allison J. Dennis
Krug David A.
Nelsen Stanley D.
Kramer Devon C
Nelson J. David
QuaLift Corporation
Stimpert Philip
LandOfFree
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