Fifth wheel suspension

Details Fifth wheel suspension Fifth wheel suspension

1991-05-31

1993-07-13

Mitchell, David M.

Land vehicles

Wheeled

Articulated vehicle

B62D 5306

Patent

active

052266753

ABSTRACT:
An apparatus for reducing the magnitude of changes in a vertical force transmitted to a tractor from a trailer through a fifth wheel hitch. The changes in vertical force are caused by the trailer reacting as an inertial mass as the trailer is moved over uneven pavement during pulling of the trailer by the tractor. The apparatus includes a sensor for providing a signal. The signal is indicative of the vertical force transmitted from the trailer through the fifth wheel hitch. An actuator is disposed between the fifth wheel hitch and the tractor. The actuator applies a vertical force to the fifth wheel hitch and the tractor. A control device operates the actuator for varying the amount of vertical force applied to the fifth wheel hitch by the actuator. The operation of the actuator is responsive to the signal indicative of the vertical force transmitted from the trailer through the fifth wheel hitch.

REFERENCES:
patent: 3494632 (1970-02-01), Bostrom
patent: 4580806 (1986-04-01), Kolstad et al.
patent: 4861060 (1989-08-01), Schult et al.
patent: 4898257 (1990-02-01), Brandstadter
patent: 4955631 (1990-09-01), Meyer

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