Patents by Inventor Mathieu Mattei

Mathieu Mattei 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).

  • Motor-vehicle alternator having a rotary inductor
    Patent number: 4431931
    Abstract: An alternator has a rotary inductor carrying permanent magnets rotatable about field windings of a fixed armature and supported on a hollow shaft. The shaft forms a housing for a cooling fan and optionally also an electronic power switching device for rectifying and regulating the alternator output. The fan inside the shaft thus cools the switching device. A separate fan incorporated in a radially outer portion of the inductor rotor cools the field windings of the armature.
    Type: Grant
    Filed: November 17, 1981
    Date of Patent: February 14, 1984
    Assignee: Equipements Automobiles Marchal
    Inventors: Pierre Perrier, Mathieu Mattei