Patents by Inventor Marcel Msihid

Marcel Msihid 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).

  • Speed changing device for a multi-polar, constant flux electric motor, and a motorized ventilating fan unit equipped with such a device
    Patent number: 5134351
    Abstract: This invention relates to a speed changing device, giving at least two motor speeds, for an electric motor supplied with direct current. It is applicable to motorized ventilating fan units designed for the air cooling of heat engines, mainly for automobiles.The speed changing device is characterized in that it includes a contactor having at least two positions whereby, in the first position of the contactor, not more than three of the brushes are supplied with electrical current so as to obtain a first motor speed (low speed), while in the second position of the contactor, all of the brushes are supplied with electrical current so as to obtain the greater motor speed (high speed).
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: July 28, 1992
    Assignee: Valeo Thermique Moteur
    Inventor: Marcel Msihid