Patents by Inventor Fernand Rivalain

Fernand Rivalain 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).

  • Liquid sampling head having a removable needle body immersed in a cavity
    Patent number: 5307696
    Abstract: A head for taking liquid samples and intended to be used in a sampling system associated with a nuclear fuel processing installation, includes a sampling tank (10) in which is removably received a needle body (16), which supports a sampling needle, to which can be fixed a vacuum sampling container (46). The needle body (16) has an extension (34) provided with holes, which surrounds the lower part of the needle (18) immersed in a cavity (26) of the sampling tank (10). The lower end (36) of said extension (34) seals a draining passage (32), which opens into the bottom of the cavity (26). This makes it possible to ensure a larger liquid quantity.
    Type: Grant
    Filed: March 19, 1992
    Date of Patent: May 3, 1994
    Assignee: Cogema-Compagnie Generale Des Matieres Nucleires
    Inventors: Jean-Guy Allain, Jean-Louis Kermorgant, Fernand Rivalain