Patents by Inventor Seyed H. R. Ghaem Magham Farahni

Seyed H. R. Ghaem Magham Farahni 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).

  • Friction material for lubircated tribological systems
    Patent number: 5540750
    Abstract: A friction material for a lubricated tribological system, particularly for a synchro of a gear box, consists of a bronze or steel matrix containing from 5 to 40% by weight of embedded hard particles. A 90% portion of the embedded hard particles have a particle size of from 50 and 300 micrometers. These hard particles consist of an alloy including Cr, Mo, W, V, Ni, Zr, Al and/or Ti and carbides of Cr, Mo, W and V; nitrides of Al and Mo; and/or oxides of Cr, Ni, Zr and Ti. The hardness of the hard particles is advantageously above 600 HV 0.1. This friction material has a comparatively high friction coefficient which is constant independent of variations of sliding speed.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: July 30, 1996
    Assignee: Sintermetal, S.A.
    Inventors: Antonio R. Fernandez, Pascal Belair, Seyed H. R. Ghaem Magham Farahni