Patents by Inventor Bertrand Lemaitre

Bertrand Lemaitre 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).

  • Hydraulic brake circuit
    Patent number: 11192535
    Abstract: A driver circuit for driving a brake having a first orifice adapted to be connected to a pressure source, a second orifice connected to a reservoir, a third orifice receiving a braking setpoint, and a fourth orifice connected to a brake. The driver circuit includes a proportional solenoid valve connected to the first orifice; an on/off solenoid valve connected to the third orifice; and a proportional braking valve provided with an actuator and configured in such a manner as to connect a brake selectively to a pressure source or to a reservoir. The actuator is configured in such a manner as to be driven by the higher of the two pressures delivered by the proportional solenoid valve and delivered by the on/off solenoid valve.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: December 7, 2021
    Assignee: POCLAIN HYDRAULICS INDUSTRIE
    Inventors: Bertrand Lemaitre, Antoine Desmyttere, André Prigent, Marko Zust
  • Circuit de Freinage Hydraulique Ameliore
    Publication number: 20190106093
    Abstract: A driver circuit for driving a brake having a first orifice adapted to be connected to a pressure source, a second orifice connected to a reservoir, a third orifice receiving a braking setpoint, and a fourth orifice connected to a brake. The driver circuit includes a proportional solenoid valve connected to the first orifice; an on/off solenoid valve connected to the third orifice; and a proportional braking valve provided with an actuator and configured in such a manner as to connect a brake selectively to a pressure source or to a reservoir. The actuator is configured in such a manner as to be driven by the higher of the two pressures delivered by the proportional solenoid valve and delivered by the on/off solenoid valve.
    Type: Application
    Filed: April 5, 2018
    Publication date: April 11, 2019
    Inventors: Bertrand Lemaitre, Antoine Desmyttere, André Prigent, Marko Zust