Land vehicles – Wheeled – Articulated vehicle
Patent
1997-05-08
1999-04-06
Swann, J. J.
Land vehicles
Wheeled
Articulated vehicle
280511, B60D 106
Patent
active
058907270
ABSTRACT:
A trailer hitch assembly that includes a hitch mount member having a chassis mount plate, a hitch mount plate having a plate mounting aperture bored entirely therethrough and four spaced alignment bores formed therein, and an extension arm in connection between the chassis mount plate and the hitch mount plate; a multi-ball hitch unit including a cross-shaped ball support structure including four support arms extending radially outward from a center portion having a structure mounting aperture formed therethrough; three trailer mount balls, each secured to the end of one of the four support arms; and a pintel hook secured to the end of the remaining one of the four support arms; and a positioning mechanism including a bolt assembly including a bolt having a cap portion and a threaded shaft portion; a securing nut threadable onto an end of the threaded shaft portion; a biasing spring; and two alignment pins, the alignment pins extending perpendicularly with respect to two of the four support arms and being positioned in a manner such that when the plate mounting aperture and the structure mounting aperture are in alignment the alignment pins are positionable in registration with two of the four spaced alignment bores, the biasing spring being positioned between the mounting plate and the support structure, the threaded portion of the bolt being positioned through the plate mounting aperture and the structure mounting aperture, the securing nut being threaded onto an end of the threaded shaft portion.
REFERENCES:
patent: 3792877 (1974-02-01), Martin
patent: 3801134 (1974-04-01), Dees
patent: 3922006 (1975-11-01), Borges
patent: 4200306 (1980-04-01), Helms
patent: 4232877 (1980-11-01), Milton
patent: 4729571 (1988-03-01), Tienstra
patent: 5044652 (1991-09-01), Brisson
patent: 5106114 (1992-04-01), Haupt
patent: 5211416 (1993-05-01), Blacklaw
patent: 5351982 (1994-10-01), Walrath
patent: 5702118 (1997-12-01), Hanson et al.
patent: 5725229 (1998-03-01), McWethy
Breaux Joseph N.
Lerner Avraham H.
Swann J. J.
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