Patents by Inventor Christine Estevenon

Christine Estevenon 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).

  • Fluid fuel injector for an internal combustion engine
    Patent number: 6273346
    Abstract: An injector in a spark ignition engine combustion chamber has an injector body containing a needle with a closure element co-operating with a fuel passage seat extended by a diffusion port. The needle is axially movable between a first position wherein the closure element bears against the seat and a second position wherein the closure element is away from the seat, It further has a single-piece diabolo-shaped element fixed in the downstream part of the body, The seat, the diffusion port and a bore for slidingly guiding the needle are formed in the one-piece element. It defines, with the body downstream part of the body a fuel supply chamber and has ports communicating the chamber with the bore immediately upstream of the seat and emerging tangentially in the bore.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: August 14, 2001
    Assignee: Sagem SA
    Inventors: Christine Estevenon, Richard Croche
  • Internal combustion engine multipoint injection module
    Patent number: 6247451
    Abstract: The invention concerns an injection module comprising a ramp (10) to be connected to a supply pump and several injectors (12) connected to the ramp each provided with electric control means for opening and closing them. The module comprises means for storing a calibrating function of each of the injectors (12) and supply the function in a form that can be used by a computing unit (24) controlling the electric means for opening and closing the injectors.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: June 19, 2001
    Assignee: Sagem S.A.
    Inventors: Christine Estevenon, Henri Trintignac
  • Fuel injector for an internal combustion engine
    Patent number: 6244525
    Abstract: The fuel injector comprises an injector body (10) containing a needle (12) terminated by a shutter element co-operating with a fuel-passing seat (28) that is extended by a diffusion hole, the needle also being displaceable between a first axial position in which the shutter element bears against the seat and a second position in which the shutter element is spaced apart from the seat, the injector also comprising a swirling chamber for putting the fuel into rotation about the axis of the shutter element and situated upstream from the seat. The chamber is defined by the upstream face of the seat (28), by a disk (42) pressed against the seat and having slots (48) opening out tangentially into a central opening (46) surrounding the shutter element, and by a needle guide (40) constituted in such a manner as to feed the outer ends of the slots.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: June 12, 2001
    Assignee: Sagem S.A.
    Inventors: David Gallup, Christine Estevenon