Land vehicles – Wheeled – Running gear
Patent
1982-04-19
1983-02-15
Song, Robert R.
Land vehicles
Wheeled
Running gear
280 81A, 280 94, 280704, 180 22, B62D 1300
Patent
active
043737382
ABSTRACT:
The auxiliary wheel assembly includes a transverse axle member extending below the vehicle frame members, either forwardly or rearwardly of the vehicle rear wheels, a king pin assembly on each of the outer end portions of the axle member, an auxiliary wheel rotatably mounted on each of the king pin assemblies for steering movement and a tie rod interconnecting the auxiliary wheels so they steer together. The axle member is carried on one end of a pair of laterally spaced arms, the other end of which is pivotally mounted on the vehicle frame member between an operating position and a retracted position. The axle member has a generally U-shape with a central portion and upwardly offset outer end portions carrying the king pin assemblies so that the axle member can be retracted to a location with the central portion immediately adjacent to and the rotational axis of the auxiliary wheels located above the bottom edges of the vehicle frame members to thereby provide above-the-ground clearance of 11-12 inches or more. In one embodiment, the auxiliary wheels are connected to the vehicle front wheels through a hydraulic actuation system which is arranged so that the auxiliary wheels are steered along with the vehicle front wheels.
REFERENCES:
patent: 3390895 (1968-07-01), Verdi
patent: 3420542 (1969-01-01), Jordan
patent: 3477738 (1969-11-01), Manning
patent: 3704896 (1972-12-01), Buelow
patent: 3771812 (1973-11-01), Pierce
patent: 3895818 (1975-07-01), Fearon
patent: 3920262 (1975-11-01), Shaw
patent: 4082305 (1978-04-01), Allison
patent: 4084833 (1978-04-01), Mohrbacker
patent: 4213626 (1980-07-01), Moore
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