Land vehicles – Wheeled – Articulated vehicle
Patent
1986-04-17
1987-12-08
Mitchell, David M.
Land vehicles
Wheeled
Articulated vehicle
280504, 403 57, B60D 100
Patent
active
047114614
ABSTRACT:
A trailer hitch is disclosed for providing coupling about three independent axes between a towing vehicle and a trailer. The hitch includes a first U-shaped yoke member having a base plate adapted for attachment to the towing vehicle and having a pair of spaced-apart arms receiving and supporting a first hinge pin extending along a horizontal, transverse axis. A second U-shaped yoke member having a pair of spaced-apart arms supports a second hinge pin about a vertical axis. The first and second U-shaped yoke members are intercoupled by first and second hollow cylindrical sections joined together in the form of a cross, the first hollow cylindrical section being supported upon the first hinge pin and the second cylindrical section being supported upon the second hinge pin to form a universal coupling. First and second short, hollow cylindrical members are mounted, end to end in abutting relationship, upon a hollow, cylindrical sleeve member for relative rotation, one with respect to the other, about a longitudinal axis. The first short, hollow cylindrical member is securely attached to the outside base portion of the second U-shaped yoke member and the second short, hollow cylindrical member is adapted for attachment to the tongue of the trailer. An axial bolt extending between the opposite ends of the first and second short, hollow cylindrical members and through the center of the hollow, cylindrical sleeve member retains the first and second short, hollow cylindrical members in their abutting rotatable relationship.
REFERENCES:
patent: 2027499 (1936-01-01), Tully
patent: 2457885 (1949-01-01), Gatch
patent: 2871030 (1959-01-01), Hollis
patent: 3730557 (1973-05-01), Cox
patent: 3843164 (1974-10-01), Flegel
patent: 4200306 (1980-04-01), Helms
patent: 4548423 (1985-10-01), Craven
Mitchell David M.
Positive Connections, Inc.
Spencer B. F.
Watts Charles R.
LandOfFree
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