Patents by Inventor Michel René Marie Jacques Pouvreau

Michel René Marie Jacques Pouvreau 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).

  • Device for monitoring the speed of rotation of an electric motor and centrifuging apparatus equipped with such a device
    Patent number: 6438505
    Abstract: This device for monitoring the speed of rotation of an electric motor (10) comprises a unit (16) for controlling the speed of rotation of the motor and a speed limitation unit (14) linked to the control unit (16) and including a processor (24) for comparing between at least one monitoring signal (S′; UPWM) representative of the speed of rotation of the motor imposed on the latter by the control unit (16) and a threshold value (VMAX) corresponding to the maximum value at which the motor (10) is permitted to operate, and a disconnection unit for at least temporarily disconnecting the motor (10) from its supply should the threshold value be exceeded. Prior to each startup of the motor (10), the control unit (16) carries out a phase of testing the correct operation of the speed limitation unit (14) by generating a monitoring signal (S′) corresponding to a speed of rotation value greater than the threshold value.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: August 20, 2002
    Assignee: Jouan
    Inventor: Michel René Marie Jacques Pouvreau