Vehicle with rear traction kit

B - Operations – Transporting – 62 – D

Patent

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Details

B62D 55/04 (2006.01)

Patent

CA 2226812

An all terrain vehicle in one embodiment provides greatly improved traction. The vehicle includes a grooved rear wheel, a suspension system, and a cleated track with an endless ridge on the driven surface of the track. The ridge cooperates with the groove to align the track on the wheel. During forward propulsion, the track passes under the rear tire then rearward under two bogeys, then around an idler assembly and back over a third bogey back to the wheel. On level around, the suspension system locates the bogeys and the idler so that the idler guides the track away from the ground. Each bogey aligns the ridge in a gap between tapered surfaces. Tapered surfaces remove debris from the driven surface of the track. The idler aligns the ridge between pan shaped rims. The suspension system includes a swing arm hitch and a shock absorber. The swing arm pivot is located behind and below the rear axle toallow movement of the idler assembly in a wide vertical arc for forward and rearward propulsion over uneven terrain.

Le véhicule tout terrain qui est l'objet d'une variante de l'invention offre une traction nettement supérieure. Le véhicule comprend une roue arrière avec rainures, une suspension et une chenille munie de barrettes, avec rebord sans fin sur la surface menée de la chenille. Le rebord, en association avec la rainure, permet de maintenir l'alignement de la chenille par rapport à la roue. Durant la propulsion vers l'avant, la chenille passe en dessous du pneu arrière puis, en se déplaçant vers l'arrière, en dessous de deux bogies, puis autour d'une roue de retour pour revenir vers un troisième bogie et vers la roue de retour. Sur un terrain de niveau, la suspension positionne les bogies et la roue de retour de sorte que cette dernière éloigne la chenille du sol. Chaque bogie aligne le rebord entre des jantes de forme circulaire. La suspension comprend un attelage à bras oscillant et un amortisseur. Le pivot du bras oscillant est situé en arrière et en dessous du bras oscillant afin de permettre le mouvement de l'ensemble de retour sur un arc vertical large pour la propulsion en marche avant et en marche arrière sur terrain inégal.

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