Patent ID: 7497296

Claim:
An all-wheel-drive motorcycle wherein an engine drives a rear wheel and a hydraulic pump, and oil pressure generated by the hydraulic pump is supplied to a hydraulic motor for driving a front wheel comprising: a front wheel hub provided on the front wheel, said front wheel hub including a cup-shaped hub provided with a recess portion, the recess portion of the hub being covered by a cover and the hydraulic motor being supported by the cover; a drive gear is provided on an output shaft of the hydraulic motor; and a driven gear is provided in the recess portion of the hub; wherein the driven gear is provided on the side of an axle of the front wheel, an output shaft of the hydraulic motor is arranged so as to be inclined with respect to the axle of the front wheel and the drive gear and the driven gear are bevel gears, and the bevel gears are arranged so that smaller diameter portions face toward the inside of the recess portion, and the front wheel hub includes a boss portion extending inwardly therefrom and further including a sleeve being fixed to the boss portion and bearings mounted between the axle of the front wheel and the sleeve for permitting rotation therebetween.