Patents by Inventor Laurent Chapellier

Laurent Chapellier 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).

  • Process and device for controlling the power of a load via a phase adjustment system
    Patent number: 5796245
    Abstract: A method for controlling the power supplied to a load (1) which is powered by an AC voltage source U with a period T via a generalised phase adjustment system, includes the steps of periodically delivering a sequence of p elements to the load (1), in accordance with a predetermined set power, wherein p is an integer and each element comprises n.sub.i periods T, where n.sub.i is an integer, during which the voltage U is divided symmetrically at an angle .alpha..sub.i, the consecutive phase angles .alpha..sub.i and .alpha..sub.i+1 being different, and the combination of angles .alpha..sub.1 . . . .alpha..sub.i , . . . .alpha..sub.p being selected in such a way that they limit current harmonics, and limit a flicker effect. The method is particularly suitable for power control in electric motors.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: August 18, 1998
    Assignee: Moulinex S. A.
    Inventors: Alain Bernard Marc Beaulieu, Pierre Epinat, Laurent Chapellier