Patents by Inventor Marc Picard

Marc Picard 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).

  • Infinitely variable transmission with power branching, with electric selector
    Patent number: 7582033
    Abstract: An infinitely variable transmission with power shunting having at least two operating modes, whereof the components are distributed between two power paths connecting in parallel the heat engine to the vehicle wheels, including at least three planetary gear trains, two electrical machines, at least one reduction stage, and a control distributing differently the power between the two power paths based on the operating mode thereof.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: September 1, 2009
    Assignee: Renault S.A.S.
    Inventors: Ahmed Kefti-Cherif, Marc Picard, Michel Buannec, Sebastien Chanson
  • Partitioned Gearbox
    Publication number: 20080148900
    Abstract: A motor vehicle gearbox with parallel shafts including a plurality of torque speed gears, including two concentric primary shafts alternately connected to the vehicle engine through first and second clutches, and two secondary shafts connected to the vehicle wheel through a differential. A first compartment contains at least one clutch, a second compartment contains hydraulic control elements, and a third compartment contains the gear selection mechanism of the gearbox.
    Type: Application
    Filed: January 31, 2006
    Publication date: June 26, 2008
    Applicant: RENAULT s.a.s
    Inventors: Michel Buannec, Philippe Cloud, Marc Picard
  • Infinitely variable transmission with power branching, with electric selector
    Publication number: 20060111211
    Abstract: The invention concerns an infinitely variable transmission with power shunting having at least two operating modes, whereof the components are distributed between two power paths connecting in parallel the heat engine (130) to the vehicle wheels (133), said means including at least three planetary gear trains (137, 138, 141, 142), two electrical machines (131, 132), at least one reduction stage (136, 139, 140, 143), and control means distributing differently the power between the two power paths based on the operating mode thereof.
    Type: Application
    Filed: November 6, 2003
    Publication date: May 25, 2006
    Applicant: Renault S.A.S.
    Inventors: Ahmed Kefti-Cherif, Marc Picard, Michel Buannec, Sebastien Chanson
  • Waterproof flashlight
    Patent number: D283646
    Type: Grant
    Filed: October 25, 1983
    Date of Patent: April 29, 1986
    Assignee: Gipelec, S.A.
    Inventors: Alain Battarel, Jean-Marc Picard