Patent ID: 6237901
Filing Date: 2001-05-29
Classification: B60G,F16F

Abstract:
Suspension for a vehicle wheel using at least one helicoidal spring, and at least one flexible retaining and connecting armoring, which in working position, stresses a portion of the spring by maintaining it compressed, to obtain two different stiffness curves of which the inflection point is adjacent the working position; relative to this position, upon a compression, the whole of the helicoidal spring is compressed and, upon expansion, only the unstressed portion of said spring is uncompressed, the suspension being therefore asymmetric with an expansion stiffness which is greater than its compression stiffness, whereineach armoring is constituted, on the one hand, comprises two securement and retaining elements, the one co-acting with all or a portion of a winding of the helicoidal spring, the other co-acting either with all or a portion of another winding of said spring, or with the body of the shock absorber, and a longitudinal element, deformable in compression and indeformable in expansion, secured to the two securement and retaining elements, the armature circumscribing and stressing at least two windings of the helicoidal spring.