Abstract: A power supply for powering a hydraulic implement includes: an electric storage unit; an electric motor, an electric generator, a hydraulic pump and a control unit; the electric motor adapted for receiving electric power and driving the hydraulic pump to power the hydraulic implement; the electric generator adapted for translating mechanical energy into the electric power; the electric storage unit also being adapted for providing the electric power; and the control unit for selecting a source of the electric power from one of the generator and the electric storage unit. A method for operating the power supply and a vehicle are also provided.

Abstract: A power supply for powering a hydraulic implement includes: an electric storage unit; an electric motor, an electric generator, a hydraulic pump and a control unit; the electric motor adapted for receiving electric power and driving the hydraulic pump to power the hydraulic implement; the electric generator adapted for translating mechanical energy into the electric power; the electric storage unit also being adapted for providing the electric power; and the control unit for selecting a source of the electric power from one of the generator and the electric storage unit. A method for operating the power supply and a vehicle are also provided.

Abstract: An aerial lift apparatus unit includes at least a lower boom pivotally interconnected to a transport unit for raising and lowering of the lower boom. An upper boom is pivotally connected to the outer end of the lower boom for raising and lowering of the upper boom with respect to the lower boom. A single integrated lifting and compensating cylinder unit includes an elongated cylinder with a piston and piston rod journaled in the one end and operable to extend outwardly therefrom. The cylinder defines a dual operating cylinder with a base end from which the piston rod extends and an inner base end extending from the base end and defining an upper boom/compensating unit. A hydraulic control system includes a first hydraulic gated control system for raising and positioning of the upper boom relative to the lower boom.