Supports – Resilient support – Adjustable preloading of resilient means
Patent
1987-12-03
1989-11-14
Machado, Reinaldo P.
Supports
Resilient support
Adjustable preloading of resilient means
248421, 248588, 248608, 297345, F16M 1300
Patent
active
048802018
ABSTRACT:
A suspension system has a base, mountable to the floor of a vehicle, and a frame above the base. The base and frame are coupled by a linkage, for example two, spaced pairs of crossed links. A mechanical spring, preferably in the form of a torsion bar, is mounted in one of the base and frame. A lever is coupled to the spring means. A roller assembly mounted in the links is movable along the lever arm to vary its length and to act as a fulcrum. The lever has a cam lobe so that movement of the roller assembly arcuately moves the torsion bar to preload same, as the length of the lever arm is altered. Varying the length of the lever arm and the preloading of the spring responsive to differing occupant's weights maintains constant natural frequency and centers the suspension system in the ride zone.
REFERENCES:
patent: 2204894 (1940-06-01), Johnson
patent: 2675985 (1954-04-01), Boiteux
patent: 3109621 (1963-11-01), Simons et al.
patent: 3140851 (1964-07-01), Bilancia
patent: 3301520 (1967-01-01), Barth et al.
patent: 3774963 (1973-11-01), Lowe
patent: 4077596 (1978-03-01), Pinaire et al.
Hall Garth O.
Tengler Harvey N.
Bostrom Seating, Inc.
Machado Reinaldo P.
Talbott David L.
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