Spring Type Patents (Class 293/135)
  • Patent number: 4264094
    Abstract: This energy absorbing bumper mount comprises a spring bracket assembly which includes a pair of diverging spring arms that carry pins on the outer end thereof. A preloaded yieldable energy absorbing band of oriented plastic material is stretched across the arms by attachment to the pins. On impact of a bumper attached to the spring arms, the pins are laterally displaced from one another as the spring arms are deflected. Energy is absorbed by the stretching of the band and by deflection of the spring arms. Rebound is controlled with the slow recovery rate of the band acting as a buckling column to retard recovery of the spring arms to their normal undeflected position.
    Type: Grant
    Filed: August 22, 1979
    Date of Patent: April 28, 1981
    Assignee: General Motors Corporation
    Inventors: Charles R. White, Wayne V. Fannin
  • Patent number: 4235467
    Abstract: A bumper structure comprising at least two flexure elements extending transversely between two abutment zones situated at their ends.The two flexure elements are connected together at their middle part; the moment of inertia of a first element, in the longitudinal direction L, is minimal in the middle part and increases on each side up to a maximum value for a section S, then decreases as far as the ends 2e; the second element presents, in its middle part, the section having the maximum moment of inertia, the moment of inertia of the sections of this second element decreasing on each side as far as the ends.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: November 25, 1980
    Assignees: Societe Anonyme Automobiles Citroen, Automobiles Peugeot
    Inventor: Guy R. M. Gardou
  • Patent number: 4221413
    Abstract: An improved energy absorption device of the type incorporating a core member having layered arcuate bands each formed of a corrugated configuration with apices. Each corrugated layer within the core member is stacked in contact with each other having the adjoining arcuate bands overlaying in abutting relationship and joined to each other. The core member is mounted to a support member. A deformable outer body enclosure surrounds the support member and the plurality of the corrugated arcuate bands so that when a force strikes the shock absorption bumper, the apices of the layered bands permanently deform by concurrent flattening of the arcuate bands in engagement with each other. The plurality of corrugated bands thereby concurrently resist and absorb the striking force.
    Type: Grant
    Filed: February 28, 1978
    Date of Patent: September 9, 1980
    Inventor: Yves Bonnetain
  • Patent number: 4178028
    Abstract: This energy absorber yieldably couples a bumper to support structure on a vehicle and comprises a spring bracket assembly which includes a pair of diverging spring arms which carry pins on the ends thereof. A preloaded yieldable energy absorbing band of resilient plastic material is stretched across the arms, by attachment to the spaced pins. On impact of the bumper, the pins are displaced outwardly from one another as the spring arms are deflected to stretch the energy absorbing band. The deflection of the spring arms and the stretching of the energy absorber absorbs impact energy.
    Type: Grant
    Filed: December 1, 1977
    Date of Patent: December 11, 1979
    Assignee: General Motors Corporation
    Inventor: Loren E. Lura