Patents by Inventor Jean-Louis Vigneau

Jean-Louis Vigneau 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).

  • Patent number: 6009186
    Abstract: A method and apparatus for harvesting fruit determines the proportion of fruit in a mixture of products containing fruit and bodies foreign to the fruit by capturing at least one initial image of a surface of the mixture to be examined. The device then assigns to each image pixel of one of two extreme grey levels according to the initial grey level of the pixel relative to a set threshold and then records the number of pixels of at least one extreme grey level to determine a area ratio between areas occupied by fruit and foreign bodies in the image. The invention has particular application to the harvesting of fruit, berries and the like produced on trees or bushes grown in rows to use the calculated proportion of fruit to adapt at least one of the functioning parameters of the machine.
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: December 28, 1999
    Assignee: New Holland Braud S.A.
    Inventors: Nathalie Gorretta, Jean-Louis Vigneau, Dominique Clanet, Jean-Fran.cedilla.ois Bonicel, Jean-Paul M. L. Martin, Daniel H. A. M. Le Neve, Jean-Paul Berthet
  • Patent number: 4683905
    Abstract: Fluid distribution connector made up of a connector body (1) provided with a fluid intake (4, 33') and means to assure the circulation of the fluid between this intake and a connector tip (13, 39) only when this tip is introduced into the connector body, characterized in that it comprises a jacket (2, 25) whose rear chamber (3, 26) can communicate with fluid intake (3, 34) and in which slides a piston (5, 17) provided with a circulation duct in the form of an axial blind hole (6, 18) open at the front and radial bores (7, 19) at the rear, this piston being kept by the pressure of fluid in the closed position, for which the radial bores are located in the jacket, against a stop (8, 36), while introduction of connector tip (13, 39) shove it in its open position for which radial bores (7, 19) come out in rear chamber (3,26).
    Type: Grant
    Filed: January 15, 1986
    Date of Patent: August 4, 1987
    Assignee: Duffour et Igon S.A. (D.I.)
    Inventors: Jean-Louis Vigneau, Pierre Trenque, Bruno Rivoire
  • Patent number: D296863
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: July 26, 1988
    Assignee: Etablissements Duffour et Igon (D.I.)
    Inventor: Jean-Louis Vigneau
  • Patent number: D299517
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: January 24, 1989
    Assignee: Etablissements Duffour et Igon (D.I.)
    Inventor: Jean-Louis Vigneau