Patents by Inventor Vincent Laval

Vincent Laval 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).

  • METHOD FOR CONTROLLING A TURBINE
    Publication number: 20160215752
    Abstract: This method is for controlling a turbine for a hydraulic power plant comprising at least one reservoir, the turbine comprising a hub having several blades. The method includes running the turbine in at least two different operating modes including a direct power-generating mode and an indirect power-generating mode, when a flow of water fills the reservoir or when the reservoir is emptied.
    Type: Application
    Filed: January 20, 2016
    Publication date: July 28, 2016
    Inventors: Fabrice LOISEAU, Vincent LAVAL, Maryse FRANCOIS
  • Skid steer machine with automatic operating ratio change system
    Patent number: 8478504
    Abstract: A skid steer machine having separate left and right hydraulic propulsion units includes an operating ratio change system by which the ratio of the propulsion speed of at least one of the hydraulic propulsion units versus the hydraulic flow directed to the propulsion units can be changed from at least a first ratio to a second ratio and inversely. The operating ratio change system includes an operating ratio change ECU which controls an operating ratio change device to operate in at least a first ratio configuration or a second ratio configuration, and the operating ratio change system operates in an automatic operating mode where the operating ratio change ECU selects the operating ratio according to machine parameters received by the operating ratio change ECU.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: July 2, 2013
    Assignee: Volvo Compact Equipment SAS
    Inventors: Vincent Laval, Renaud Laperriere
  • SKID STEER MACHINE WITH AUTOMATIC OPERATING RATIO CHANGE SYSTEM
    Publication number: 20110191003
    Abstract: A skid steer machine having separate left and right hydraulic propulsion units includes an operating ratio change system by which the ratio of the propulsion speed of at least one of the hydraulic propulsion units versus the hydraulic flow directed to the propulsion units can be changed from at least a first ratio to a second ratio and inversely. The operating ratio change system includes an operating ratio change ECU which controls an operating ratio change device to operate in at least a first ratio configuration or a second ratio configuration, and the operating ratio change system operates in an automatic operating mode where the operating ratio change ECU selects the operating ratio according to machine parameters received by the operating ratio change ECU.
    Type: Application
    Filed: October 23, 2008
    Publication date: August 4, 2011
    Applicant: Volvo Compact Equipment SAS
    Inventors: Vincent Laval, Renaud Laperriere