B - Operations – Transporting – 60 – D
Patent
B - Operations, Transporting
60
D
B60D 1/00 (2006.01) B60D 1/167 (2006.01) B60D 1/173 (2006.01) B60D 1/30 (2006.01) B60D 1/44 (2006.01) B62D 13/00 (2006.01) B62D 53/00 (2006.01)
Patent
CA 2129684
A method of connecting a trailer with a rigid drawbar and at least one centrally positioned axle to a tow vehicle is described. The method includes the following described steps. Firstly, connect the trailer drawbar to an intermediate hitch support having rotatably mounted ground engaging wheels, such that the hitch weight is borne by the intermediate hitch support. Secondly, pivotally connect an intermediate drawbar to the trailer drawbar for movement about a transverse horizontal axis. Thirdly, connect the intermediate drawbar to a hitch support mounted on a tow vehicle, such that a towing force is transmitted through the intermediate drawbar to the trailer drawbar. Fourthly, couple the tow vehicle and the intermediate hitch support through a pair of spaced apart steering arms. The steering arms have tow vehicle ends and intermediate hitch support ends. The tow vehicle ends are spaced equidistant from an intermediate drawbar hitch point on the tow vehicle hitch support. The intermediate hitch support ends are spaced equidistant from a trailer drawbar hitch point on the intermediate hitch support. As the tow vehicle turns the steering arms cause a proportionate change in the angular positioning of the intermediate hitch support to maintain correct steering geometry. The steering arms are attached to provide for omnidirectional movement thereby accommodating relative changes in attitude between the tow vehicle, the intermediate hitch support and the trailer.
Keith Peter G.
Woodruff Nathan V.
LandOfFree
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