Patents by Inventor Christine Lietard

Christine Lietard 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).

  • Simplified process for the production of carbon motor brushes
    Patent number: 5441683
    Abstract: A process for producing a brush for an electric motor having predetermined final dimensions and including a wearing block and a connecting braid. The brush is produced by preparing at least one mixture including a conductive graphite powder in the form of solid particles of a mean thickness less than 25 .mu.m and a mean shape factor greater than 5, encased with a distillation binder. The mixture is molded together with the connecting braid in a mold to form a crude brush of the final dimensions and the crude brush is baked.
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: August 15, 1995
    Assignee: Le Carbone Lorraine
    Inventors: Eric Kammerer, Christine Lietard, Jean-Bernard Deboves