Land vehicles – Wheeled – Articulated vehicle
Patent
1991-03-15
1993-07-06
Hill, Mitchell J.
Land vehicles
Wheeled
Articulated vehicle
B60D 100
Patent
active
052249603
ABSTRACT:
A vehicle tow bar includes a transverse cross member which mounts one pivotal, elongated leg assembly in fixed position at one end of the cross member and a second pivotal, elongated leg assembly for movement along the cross member between a collapsed condition closely adjacent the first leg assembly and an erected, operative position at the opposite end of the cross member. Stub shafts reinforce the ends of the cross member at the points of maximum stress. The ends of the leg assemblies opposite the cross member are connected to an apex frame which mounts a socket coupler component of a ball and socket type trailer hitch. Each leg assembly includes telescopic sections for adjusting the length of the leg assembly, and the locking mechanism releasably interconnects the telescopic sections to secure the latter in fully extended, operative towing condition. Flexible protective boots are provided about one of the telescoping leg sections of each leg assembly to protect the telescoping section against the deleterious effects of the surrounding environment and to contain lubricating grease and the like for constant lubrication of the telescoping leg sections.
REFERENCES:
patent: 4577883 (1986-03-01), Duncan
patent: 4856805 (1989-08-01), Davis
patent: 4861061 (1989-08-01), Frantz
patent: 5071153 (1991-12-01), Duncan
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