Land vehicles – Wheeled – Articulated vehicle
Patent
1990-06-18
1991-08-20
Hill, Mitchell J.
Land vehicles
Wheeled
Articulated vehicle
280504, B60D 106
Patent
active
050408178
ABSTRACT:
An improved trailer hitch assembly to be attached to a drawbar for towing a trailer, the assembly including an upright elongated hitch post threaded at the lower end by which it is attached to a drawbar, the upper end being of cylindrical external configuration and the post having a central passageway therein communicating with the bottom end, a grease fitting threadably received in an opening in the bottom end communicating with the passageway and the upper end of the passageway communicating with the external cylinder surface, and a ball having an opening therethrough rotatably received on the hitch post and a keeper ring secured to the upper end of the hitch post to retain the ball in position, grease being deposited from the grease fitting through the passageway to lubricate the cylindrical surface between the hitch post and the ball.
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Hill Mitchell J.
Shaughnessy Michael
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