Four wheel drive system

B - Operations – Transporting – 62 – D

Patent

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Details

B62D 11/06 (2006.01) B62D 9/00 (2006.01)

Patent

CA 2661313

A four wheel drive system for bilaterally symmetric vehicles is characterized by separate drive systems for the front and rear wheels. Each drive system is operable to independently drive each wheel. The rear wheels of the vehicle are steering wheels which are connected with the vehicle frame for independent rotation about a vertical axis. Steering and driving of the wheels is controlled by a controller. The combination of independent steering for the rear wheels and independent powering of all four wheels provides the vehicle with a zero turning radius for improved mobility as well as improved traction on unstable surfaces.

L'invention concerne une transmission à quatre roues motrices pour véhicules à symétrie bilatérale, se caractérisant par des transmissions distinctes pour les roues avant et arrière. Chaque transmission peut être actionnée pour entraîner indépendamment chaque roue. Les roues arrière du véhicule sont des roues directrices reliées au cadre du véhicule pour une rotation indépendante autour d'un axe vertical. La direction et l'entraînement des roues sont commandés par une unité de commande. La combinaison d'une direction indépendante des roues arrière et d'une mise en mouvement indépendante des quatre roues confère au véhicule un rayon de braquage nul entraînant une mobilité et une traction améliorées sur des surfaces instables.

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