Patents by Inventor Elisabeth Rulliere

Elisabeth Rulliere 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).

  • Magnetic bearing and an assembly comprising a stator portion and a rotor portion suspended via such a bearing
    Patent number: 5686772
    Abstract: The bearing has a fixed portion, and a moving portion, and includes a passive magnetic abutment composed of a fixed element secured to said fixed portion, and of a moving element secured to said moving portion. The bearing further including a passive magnetic centering bearing which is coaxial with said passive abutment, and which is composed of a fixed element secured to the fixed portion, and of a moving element secured to the moving portion, the passive abutment externally surrounding the passive centering bearing, the passive abutment having axial stiffness k.sub.ab, radial stiffness k.sub.rb, a mean radius R.sub.mb, and an inside radius R.sub.ib, and said passive centering bearing having axial stiffness k.sub.ac, radial stiffness k.sub.rc, a mean radius R.sub.mc, and an outside radius R.sub.
    Type: Grant
    Filed: January 18, 1995
    Date of Patent: November 11, 1997
    Assignee: Alcatel Cit
    Inventors: Jerome Delamare, Jean-Paul Yonnet, Elisabeth Rulliere