Vehicle

Details Vehicle Vehicle

B - Operations, Transporting

62

D

180/33

B62D 7/15 (2006.01)

Patent

CA 2034957

ABSTRACT Title: Vehicle A vehicle has at least two pairs of ground engaging wheels, which vehicle can alternatively be steered with two or four wheels, the vehicle comprising a chassis having first and second pairs of ground engaging wheels which are movable to effect steering of the vehicle, the wheels of each pair being mounted at opposite sides of the chassis and the second pair of wheels being lockable in a position such that simple steering is effected solely by the first pair of wheels, the first pair of wheels being movable to effect steering by a first fluid actuating means to which fluid is fed from a steering valve means, and the second pair of wheels being movable by a second fluid actuating means to which fluid is fed via a steering mode selector valve means from the steering valve means, the steering mode selector valve means having a first operating condition when fluid from the steering valve means is not fed to the second fluid actuating means whereby simple steering is effected solely by the first pair of wheels and a second operating condition wherein fluid from the steering valve means is fed to the second fluid actuating means whereby compound steering is effected by the first and second pairs of wheels the first or second operating condition of the steering mode selector valve means being retained until the steering mode selector valve means receives a positive signal from a control means to change the operating condition of the steering mode selector valve means so that the steering mode of the vehicle last selected i.e. two or four wheel steering, is remembered by the steering mode selector valve means.

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