Motor vehicles – Vehicle trains – Motorized trailer
Patent
1991-06-03
1994-07-19
Johnson, Brian L.
Motor vehicles
Vehicle trains
Motorized trailer
180 146, B62D 5304
Patent
active
053300203
ABSTRACT:
A wheeled tailer power unit includes a self-powered, self-contained towing servomechanism that permits selective towing and control of a trailing vehicle by a leading vehicle in the absence of a power transmitting and control umbilical between the leading vehicle and the trailer power unit, A controller included in the trailer power unit measures the relative displacement of the unit and the leading vehicle and communicates to a unit control and drive means appropriate signals to operate variable torque transmitting drive means operating the respective wheels of the trailer power unit.
REFERENCES:
patent: 4027738 (1977-06-01), Lundin
patent: 4502557 (1985-03-01), Anderson
patent: 4771838 (1988-09-01), Ketcham
Johnson Brian L.
Zeender Florian
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