B - Operations – Transporting – 60 – P
Patent
B - Operations, Transporting
60
P
280/162
B60P 1/00 (2006.01) B62D 21/14 (2006.01) B62D 33/08 (2006.01) B62D 53/04 (2006.01)
Patent
CA 1049062
ABSTRACT OF THE DISCLOSURE A dump truck or other truck having a rigid chassis and a front and a rear axle assemblies secured at fixed points along the chassis, wherein this truck is distinctively provided with a supplementary axle assembly displaceable behind the conventional rear axle assembly length- wise of the truck chassis, between a position protracting rearward from the latter to increase the payload rating of the truck and a retracted position under the rear of the chassis for unhindered dumping operation. This supplementary axle assembly is also vertically adjustable between an off-the-ground position for the empty return trips, a normal sus- pension position for the increased payload rating, and a stiffer sus- pension position for increased loading on the front axle and steering maneuverability. This truck includes a supplementary frame slidably connected to the chassis, and hydraulic cylinder slidably actuating this frame, and an adjustable suspension interposed between the sup- plementary axle assembly and frame for the afore-mentioned vertical adjustment.
242705
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