Electric vehicles
OwnerGraham John Addsinventor
Life of this patent
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Abstract
The motor of an electric car has its armature coupled to one drive shaft and its case coupled to another drive shaft The front drive shaft drives the front axle, i.e. the front pair of wheels, through a differential; the rear drive shaft drives the rear axle, i.e. the back pair of wheels, through a gearbox and a differential The motor is normally energized to drive the two axles in the same direction. An electric auxiliary motor is coupled to the rear drive shaft from the main motor. The vehicle is operable in first and second modes in which the ratios of the front and back differentials (including effect of the gearbox) are respectively greater than and less than 1:1.
Claims12
An electric vehicle, comprising first and second drive shafts, a front axle carrying front wheels, a rear axle carrying rear wheels, an electric motor having an armature coupled to the first drive shaft and a case coupled to the second drive shaft, the first and second drive shafts respectively arranged for driving the front and rear axles through respective first and second differentials, and a gear-box having a plurality of ratios in at least one of the drive shafts.
Dependencies are inferred from the claim text.