Land vehicles – Wheeled – Articulated vehicle
Patent
1993-05-21
1994-07-26
Hill, Mitchell J.
Land vehicles
Wheeled
Articulated vehicle
2804252, 2804412, 414563, B60P 100, B60P 300, B60P 312
Patent
active
053322487
ABSTRACT:
A power operated hitch with hitch ball for towing a large trailer, and having an electrically powered hydraulic fluid pumping system and multiple hydraulic rams on a main support frame of the hitch which mounts to the top of the back frame section of a transport truck. The hitch includes an L-shaped main boom which is telescopic, with the telescopic portion generally lengthwise horizontally disposed above the truck frame. The hitch ball is attached to a bottom end of a vertically disposed downward extension of the distal end of the boom. The main boom is pivotally supported by a main spherical bearing; a horizontal main support shaft through the spherical bearing; and a horizontal support arm affixed to one side of the boom and slidably retained at the distal end thereof in a channel connected to the hitch main frame. Through use of the multiple rams and articulating joints, the hitch includes movement capabilities for vertical, lateral, and extension and retraction of the hitch ball relative to the back of the truck. A semi-automatic lock is provided for mechanically locking the boom and hitch ball stationary for normal towing of a trailer.
REFERENCES:
patent: 4664585 (1987-05-01), Ambridge et al.
patent: 4946182 (1990-08-01), Weber
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