Land vehicles – Wheeled – Articulated vehicle
Patent
1989-07-03
1990-07-31
Marmor, Charles A.
Land vehicles
Wheeled
Articulated vehicle
2804792, B60D 144, B60D 114
Patent
active
049445251
ABSTRACT:
A self-locking trailer hitch has a frame arranged for attachment to a vehicle, a housing arranged to slide longtudinally on the frame between extended and retracted positions, a swing bar pivotally attached to the housing to swing laterally about a vertical axis so that a hitch ball on the free end of the swing bar can be moved about for coupling of two vehicles. The swing bar, housing and frame have holes that will align when the swing bar is centered and the housing is extended, and a spring loaded pin that will lock the three holes and, hence, the related parts into extended and centered position when the towing vehicle is driven forward after coupling.
REFERENCES:
patent: 3093395 (1963-06-01), Boutwell
patent: 3169028 (1965-02-01), Scrivner
patent: 4350362 (1982-09-01), Landers
patent: 4603878 (1986-08-01), Smith
patent: 4792153 (1988-12-01), Galdes
Jeter John D.
Kagen Alan M.
Marmor Charles A.
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