Patents by Inventor Elmar Pfletschinger

Elmar Pfletschinger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Leaf spring of composite material, and relative fabrication method
    Patent number: 6422540
    Abstract: A leaf spring, in particular for automotive suspensions, wherein a central core, e.g. of varying thickness, made of a polymer material having predetermined mechanical characteristics and no reinforcing fibers, is covered on two opposite work surfaces with respective laminates, e.g. of constant thickness, made of composite material. The central core has a longitudinal axis substantially coincident with a neutral axis of the leaf spring; and a predetermined number of transverse holes, by which to fasten the leaf spring to respective mechanical members, are formed through the central core, at the longitudinal axis, without affecting the laminates of composite material.
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: July 23, 2002
    Assignee: Rejna S.p.A.
    Inventors: Elmar Pfletschinger, Carlo Muzio