Composite spring design that also performs the lower control arm function for a conventional or active suspension system
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United States of America Patent
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Nov 2, 2004
Grant Date -
Oct 24, 2002
app pub date -
Apr 23, 2001
filing date -
Apr 23, 2001
priority date (Note) -
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Abstract
The present invention includes a flexible, resilient composite spring pivotally connected to the vehicle wheel assembly by standard means such as a ball joint and knuckle. The composite spring is formed having a sinusoidal profile with rectangular cross-section preferably spanning transversely between parallel vehicle wheel assemblies. The composite spring is pivotally connected to the parallel vehicle frames by opposing perpendicular brackets welded to an upper and lower portion of the vehicle frame. A rubber bushing is preferably provided within each bracket and is in contact with opposing sides of the composite spring, allowing the spring to pivot between the vehicle frame. The composite spring is preferably formed with carbon and glass fibers. The sinusoidal composite spring blank is preferably molded with a neutral axis extending along the length of the spring at a midpoint of the sinusoidal profile.
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