Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 28, 2013
Patent Application Number
11674600
Date Filed
February 13, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
Actuators suited for use with, for example, vehicular suspension systems. In some embodiments, the present actuators include a reversible hydraulic pump configured to produce variable hydraulic pressure; a hydraulic cylinder assembly having a cylinder bore, and a piston positioned within the cylinder bore that is axially movable relative to the cylinder bore; and a hydraulic circuit hydraulically coupling the reversible hydraulic pump to the hydraulic cylinder assembly. In these embodiments, actuated axial motion of the piston relative to the cylinder bore is accomplished without the use of check valves, pressure regulating valves, or actively controlled valves.
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