Patent ID: 9422947
Filing Date: 2016-08-23
CPC Classification: B25J,F15B,Y02P

Claim Text:
1. A hydraulic system, comprising: a hydraulic piston actuator configured to perform a plurality of activities, each of the activities associated with a different level of power; the hydraulic piston actuator comprising an actuator body and a piston arranged within an interior formed by a wall of the actuator body; an energy storage member comprising a passive accumulator configured to provide passive impedance without requiring human input or additional energy input, the passive accumulator configured in the wall of the actuator body; the energy storage member configured to absorb energy applied to the hydraulic piston actuator, configured to store the absorbed energy, and configured to autonomously provide the stored energy to the hydraulic piston actuator for providing a spring effect without requiring human input or additional energy input, wherein the spring effect is provided based on a required level of energy; and a plurality of control valves configured to provide precise control of the hydraulic piston actuator along with the spring effect without requiring human input or additional energy input, each of the control valves discretely located and configured in the wall of the actuator body.