Land vehicles – Wheeled – Articulated vehicle
Patent
1987-09-25
1988-10-18
Pekar, John A.
Land vehicles
Wheeled
Articulated vehicle
403143, B60D 106
Patent
active
047781963
ABSTRACT:
In this improved ball-and-socket trailer hitch, the heavy coil spring, conventionally utilized to forwardly bias a latching collar, is eliminate; instead threaded means are provided to move the collar back and forth when it is rotated manually. Unlatching is much easier in the absence of strong spring bias on the collar, so the need for additional collar-actuating mechanism such as levers, handles and linkages, often required is conventional hitches, is eliminated. The collar may locked in a forward latched position by the inclusion of a pivoted, thumb-operated lock lever, which is spring loaded to automatically drop into the rear edge of the collar when the collar is moved into its latched position, and thus lock the collar in this latched position, constrained against rearward or rotational movement, to eliminate risk of trailer uncoupling due to unintended unlatching of the hitch. The lock lever may be adapted to accept a padlock to avoid trailer theft. The threaded collar-actuating system of this invention is independent of particular configurations of ball-enclosure jaws, thus it is adaptable for designing into a variety of trailer hitches of different types.
REFERENCES:
patent: 2035486 (1936-03-01), Larson
patent: 3650546 (1972-03-01), Koenig
Pekar John A.
Wylie Paul R.
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