Patent ID: 7156422

Claim:
Undercarriage for a vehicle, which undercarriage is of the type with a swan-neck, and comprises at least two longitudinal beams the height of the foremost part of the longitudinal beams being reduced in height, said swan-neck being thus formed by a change in height of the longitudinal beams; at least one transverse beam and at least one wheel axle, wherein at least the longitudinal beams are made of a composite material consisting of synthetic material with reinforcing fibres, such that the synthetic material of the composite material, of which at least the longitudinal beams are made; is a thermoplastic synthetic material and the height of the foremost part of the longitudinal beams has a plastically deformed reduction in height; wherein the longitudinal beams have two lateral flanks and, at the foremost part of these beams, the lateral flanks bend out or bulge, due to a thermoplastic deformation.