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An apparatus includes a generator assembly having a power source operable to power a generator. The generator is connected to a battery assembly having one or more batteries. The battery assembly is operably connected to a drive system, such as an electric drive propulsion assembly and/or an electri

An apparatus includes a generator assembly having a power source operable to power a generator. The generator is connected to a battery assembly having one or more batteries. The battery assembly is operably connected to a drive system, such as an electric drive propulsion assembly and/or an electric or hydraulic positioning assembly. A selector is operably connected to the generator assembly to select either the battery assembly or both of the generator assembly and the battery assembly to power the apparatus.

대표청구항 ▼

[ What is claimed is:] [1.] A mobile access vehicle comprising:a base;lifting apparatus, connected to said base, adapted for controllably transporting a load in a selected direction having a vertical component;at least one generator assembly comprising a power source operable to power a generator;at

[ What is claimed is:] [1.] A mobile access vehicle comprising:a base;lifting apparatus, connected to said base, adapted for controllably transporting a load in a selected direction having a vertical component;at least one generator assembly comprising a power source operable to power a generator;at least one battery assembly comprising at least one battery, the generator operably associated in series with the at least one battery assembly;at least one drive system operably associated with the at least one battery assembly, the at least one drive system comprising a propulsion assembly for propelling the vehicle and a positioning assembly for driving said lifting apparatus; anda selector operably associated with the at least one generator assembly, the selector operable to select either of the following (A) or (B) to power the at least one drive system of the vehicle:(A) the at least one battery assembly; or(B) both of the at least one generator assembly and the at least one battery assembly; whereby, with the selection of (B), the generator charges the at least one battery assembly;wherein, upon both of the at least one generator assembly and the at least one battery assembly being selected to power the at least one drive system of the vehicle, the generator is operable to substantially maintain the charge of the at least one battery assembly and is also operable to substantially increase the charge of the at least one battery assembly;said vehicle further comprising a sensor circuit operably associated with at least the at least one battery assembly, the sensor circuit operable to detect the condition of charge of the at least one battery assembly;said vehicle further comprising at least one switch being automatically operable, responsive to said sensor circuit, to switch the generator between a battery charging mode and a battery charge maintenance mode depending on whether the vehicle is being operated, wherein the generator is switched to the battery charging mode when the vehicle is not being operated.