Steering damper and backup lock beam attachment

Details Steering damper and backup lock beam attachment Steering damper and backup lock beam attachment

2006-11-07

2006-11-07

Dickson, Paul N. (Department: 3616)

Land vehicles

Wheeled

Running gear

C280S124153

Reexamination Certificate

active

07131652

ABSTRACT:
A steerable lift axle/suspension system for a heavy-duty vehicle such as a semi-trailer or a straight truck, includes a pair of steering dampers and a backup lock. The steering dampers minimize shimmy of the steerable wheels during over-the-road operation of the vehicle, and straighten the wheels on such steerable axle/suspension systems having a lift feature when the system is raised. The backup lock secures the wheels in a straightened position when such liftable systems are raised and the vehicle is backing up, to minimize vehicle handling problems. The steering dampers and backup lock are mounted at a location off the axle tube of the axle and on the axle/suspension system beams, to eliminate stress on the axle that would otherwise be caused by welded attachment of such components to the axle tube, thereby enabling use of a less robust, more lightweight axle tube.

REFERENCES:
patent: 4010813 (1977-03-01), Quigniot
patent: 4506910 (1985-03-01), Bierens
patent: 4925165 (1990-05-01), Sketo
patent: 5366237 (1994-11-01), Dilling et al.
patent: 6007078 (1999-12-01), Gottschalk et al.
patent: 6073946 (2000-06-01), Richardson
patent: 2004/0256820 (2004-12-01), Chalin et al.
patent: 1655138 (1971-10-01), None
patent: 0747281 (1996-11-01), None
patent: 2335359 (1977-07-01), None

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