Land vehicles – Wheeled – Articulated vehicle
Patent
1997-07-29
2000-03-28
Mai, Lanna
Land vehicles
Wheeled
Articulated vehicle
280462, 280494, B60D 146
Patent
active
060421371
ABSTRACT:
Two light weight and height adjustable trailer hitch devices for towing a trailer. The hitches include a vertical hinge joint block element which attaches to the trailer, a vertical hinge joint block element which is attached to the towing vehicle's bumper, and a center block element for variably connecting said hinge joint block elements. In one embodiment, apertured clevises support a rotatable joint block element which is supported further by a pair of reinforcing strips attached to the outside of the first hitch device. A second hitch device employs a double-yoked center block element rotatably mounted in a clevis and including a vertical apertured disc. The hitches allow a trailer to remain level always, even when attached to vehicles with bumpers of various heights.
REFERENCES:
patent: 1181877 (1916-05-01), Hanson
patent: 1494268 (1924-05-01), Mendenhall
patent: 1655351 (1928-01-01), Altgelt
patent: 1914963 (1933-06-01), Stephens
patent: 3664686 (1972-05-01), Anderson
patent: 3843163 (1974-10-01), Hale
patent: 4248451 (1981-02-01), Usinger
patent: 4280713 (1981-07-01), Bruhn
patent: 4391562 (1983-07-01), Hetzner
patent: 5354087 (1994-10-01), Head
patent: 5358269 (1994-10-01), Jakeman et al.
patent: 5413366 (1995-05-01), Gibbons
Fischer Andrew J.
Litman Richard C.
Mai Lanna
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