Trailer hitch

Details Trailer hitch Trailer hitch

1979-08-22

1981-08-04

Song, Robert R.

Land vehicles

Wheeled

Articulated vehicle

280488, B62D 5300

Patent

active

042818478

ABSTRACT:
The present invention is directed to a trailer hitch for a vehicle. The trailer hitch is designed to be connected to a vehicle and permits two degrees of freedom for the hitchpoint. The first degree of freedom is in a lateral direction which permits the hitchpoint to have freedom to move horizontally in a lateral direction. This degree of freedom is dampened by a viscous dampener to improve the lateral stability of a trailer connected to the hitchball. Further, springs are provided to resist lateral movement and to restore the hitchpoint to its original position during the pulling of a trailer. In addition, a second degree of freedom is provided which permits rotation of the hitchball about a longitudinal axis. Permitting the rotation of the hitchball permits the accidental overturning of a towed vehicle without overturning the towing vehicle.

REFERENCES:
patent: 1313451 (1919-08-01), Behlin
patent: 1313453 (1919-08-01), Behlin
patent: 2238095 (1941-04-01), Almcrantz
patent: 2940776 (1960-06-01), Curtis
patent: 3237741 (1966-03-01), Potter et al.
patent: 3510152 (1970-05-01), Fisher
patent: 3550710 (1970-12-01), Spanski
patent: 3722920 (1973-03-01), Reese
patent: 4037856 (1977-07-01), Medlin et al.

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