Patent ID: 8770333

Claim:
A vehicle, comprising: a chassis; a pair of driving wheels; a pair of idle wheels; at least one steering group, the steering group capable of positioning one of the pairs of wheels in a steering geometry where an axis of each wheel of the pair of wheels capable of being positioned by the steering group intersects with a remaining axis of each wheel of the remaining pair of wheels within a ground-support quadrilateral formed by the pairs of wheels; and a differential comprising: an outer case in driving engagement with a crown gear; an inner case having a first half-shaft and a second half-shaft opposingly disposed therein, the first half-shaft and the second half-shaft each having a primary toothed gear drivingly disposed thereon, the first half-shaft and the second half-shaft each having at least one of the driving wheels drivingly coupled thereto, the primary toothed gears drivingly engaged with each other using at least two secondary toothed gears, the secondary toothed gears rotatingly assembled on a pin coupled to the inner case, the secondary toothed gears substantially orthogonal to the half-shafts; a selective engagement means capable of coupling the inner case to the outer case; a selective blocking means capable of coupling the inner case to the chassis; and a selective direct gearing means capable of drivingly engaging one of the half shafts with the crown gear; wherein when the inner case is coupled to the outer case the first half-shaft and the second half-shaft are driven in a same direction, and when the inner case is coupled to the chassis and one of the half-shafts is drivingly engaged with the crown gear the first half-shaft and the second half-shaft are driven in opposite directions.