Land vehicles – Wheeled – Articulated vehicle
Patent
1990-02-28
1991-08-06
Marmor, Charles A.
Land vehicles
Wheeled
Articulated vehicle
2804611, 280493, 280457, B62D 5306
Patent
active
050371215
ABSTRACT:
A new linked articulation (LA) system for the connection of a leading trailer to a following full trailer in the heavy truck field. LA systems including the present invention constrain the front of the following full trailer to a position on an imaginary extension of the leading trailer's centerline. In the prior art devices, a telescoping `stiffening member` keeps the front portion of the second full trailer on the required line. The present invention uses a rigid and non telescoping tow bar to keep the front of the second trailer on the required line. The tow bar connects the frame of the first trailer to the frame of the second trailer and therefor also does the actual towing.
In both the present invention and the prior art LA systems the front of the second trailer is supported by a steerable axle assembly called a `dolly`. Where the tongue of the dolly of prior art LA systems serves to steer the dolly and pull the second trailer, the tongue of the dolly of the present invention serves to steer the dolly and also does the necessary telescoping function.
REFERENCES:
patent: 2251656 (1941-08-01), Botelho
Improving the Dynamic Performance of Multitrailer Vehicles: A Study of Innovative Dollies, The University of Michigan Transportation Research Institute, Jul. 1986, pp. 18-19, 41, 49, 110.
Hurley Kevin
Marmor Charles A.
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