Patents by Inventor Alain Pierdet

Alain Pierdet 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).

  • Internal combustion engine exhaust device and method for making same
    Patent number: 6848438
    Abstract: An internal combustion engine exhaust device. The device includes a conduit element through which exhaust gases flow. The conduit element includes a housing for mounting a measurement sensor such as an oxygen probe. The housing is formed by a hole extended by an insert produced directly through the conduit element.
    Type: Grant
    Filed: April 10, 1998
    Date of Patent: February 1, 2005
    Assignee: Renault
    Inventors: Daniel Celerier, Patrick Francois Markiewski, Alain Pierdet
  • INTERNAL COMBUSTION ENGINE EXHAUST DEVICE AND METHOD FOR MAKING SAME
    Publication number: 20010025419
    Abstract: The invention concerns an internal engine exhaust device comprising a conduit element (1) through which the exhaust gases flow out, said conduit element (1) including a housing (2) for mounting a measurement sensor such as an oxygen probe, characterised in that said housing (2) is formed by a hole extended by an insert produced directly through said conduit element (1).
    Type: Application
    Filed: November 30, 1999
    Publication date: October 4, 2001
    Inventors: DANIEL CELERIER, PATRICK FRANCOIS MARKIEWSKI, ALAIN PIERDET
  • Process for interpositioning of tools of a body assembly machine
    Patent number: 4946089
    Abstract: For precisely positioning a vehicle body relative to robots which spot weld the vehicle body, the vehicle body is mounted on a lower tool which is rigidly connected to front and rear upper tools which are selected from a tool magazine as a function of the geometry of the vehicle body. All of the tools are rigidly connected to one another to form a rigid annular structure surrouding the body and alone capable of positioning the body.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: August 7, 1990
    Assignee: Regie Nationale des Usines Renault
    Inventors: Dominique Baulier, Christian Defilippis, Jacques Jami, Bernard Negre, Alain Pierdet, Bernard Negre, Alain Pierdet