B - Operations – Transporting – 62 – D
Patent
B - Operations, Transporting
62
D
214/1, 180/58
B62D 5/02 (2006.01) B62D 1/26 (2006.01)
Patent
CA 1055852
A B S T R A C T A mechanical guidance mechanism is associated with each steerable wheel of a vehicle and has a roller guidance member positioned to contact a guide surface laterally adjacent the vehicle. The roller is rotatably mounted on a slidable channel slidably disposed over a square bar which is pivotally affixed to the vehicle. The other free end of the bar is pivotally fixed to a first lever which pivots substantially midway between its ends. A second lever having a fixed pivot sub- stantially midway between its ends has a pin rigidly fixed to a first end which traverses a slot in the first lever. A spring is rigidly mounted on the second lever and is mechanically linked to a third lever pivotally fixed to the vehicle intermediate the ends thereof and having a free end thereof fixed to a wheel king pin so as to transmit turning motion to the wheel. A control valve renders the hydraulic power means normally controlling the turning motion of the wheel into an inoperative condition whereby the mechanical guidance mechanism fully controls the turning of the wheel.
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