Patents by Inventor Daniel Levrard

Daniel Levrard 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).

  • Compact fuel cell
    Patent number: 9184453
    Abstract: A fuel cell including a stack of electrochemical cells and end plates applying a tightening strain onto the electrochemical cells, a thermal management system formed by a heat transfer fluid flow circuit in the stack, and a heat transfer fluid flow circuit external to the stack. The heat transfer flow circuit and the external circuit are connected in one of the end plates. The external circuit includes a first subcircuit including a heat exchanger and a second subcircuit directly connected to the inlet of the internal circuit. A thermostatic valve Is integrated in the end plate to control the heat transfer fluid flow in one and/or the other of the subcircuits as a function of temperature of the fluid at the outlet of the internal circuit.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: November 10, 2015
    Assignee: Commissariat á l'énergie atomique et aux énergies alternatives
    Inventors: Delphine Drouhault, Daniel Levrard, Philippe Manicardi, Pierre Nivelon
  • COMPACT FUEL CELL
    Publication number: 20120107710
    Abstract: A fuel cell including a stack of electrochemical cells and end plates applying a tightening strain onto the electrochemical cells, a thermal management system formed by a heat transfer fluid flow circuit in the stack, and a heat transfer fluid flow circuit external to the stack. The heat transfer flow circuit and the external circuit are connected in one of the end plates. The external circuit includes a first subcircuit including a heat exchanger and a second subcircuit directly connected to the inlet of the internal circuit. A thermostatic valve is integrated in the end plate to control the heat transfer fluid flow in one and/or the other of the subcircuits as a function of temperature of the fluid at the outlet of the internal circuit.
    Type: Application
    Filed: July 12, 2010
    Publication date: May 3, 2012
    Applicant: Commissariat a l'energie atomique et aux ene alt
    Inventors: Delphine Drouhault, Daniel Levrard, Philippe Manicardi, Pierre Nivelon