Patents by Inventor Daniel Lalu

Daniel Lalu 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).

  • Position sensor of a valve actuator for an internal combustion engine
    Patent number: 7188592
    Abstract: A sensor of the position of a target is secured to an electromagnetic or electromechanical valve actuator of an internal combustion engine. The target is driven by a reciprocating translatory motion (f+, f?) in synchronism with that of the valve. The sensor uses an eddy current transducer, including two secondary coils connected in series opposition and a primary coil fed by a radio frequency current. The output signal of the transducer is sent to a phase locked loop synchronous detector. The coils are engraved or printed on a flexible film. The transducer is arranged in an external tube made of aluminum and includes an internal wall made of insulating material.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: March 13, 2007
    Assignee: Peugeot Citroen Automobiles SA
    Inventors: Christophe Baldi, Daniel Lalu
  • Position sensor of a valve actuator for an internal combustion engine
    Publication number: 20050231194
    Abstract: A sensor of the position of a target is secured to an electromagnetic or electromechanical valve actuator of an internal combustion engine. The target is driven by a reciprocating translatory motion (f+, f?) in synchronism with that of the valve. The sensor uses an eddy current transducer, including two secondary coils connected in series opposition and a primary coil fed by a radio frequency current. The output signal of the transducer is sent to a phase locked loop synchronous detector. The coils are engraved or printed on a flexible film. The transducer is arranged in an external tube made of aluminum and includes an internal wall made of insulating material.
    Type: Application
    Filed: April 6, 2005
    Publication date: October 20, 2005
    Inventors: Christophe Baldi, Daniel Lalu