Patents by Inventor Jean Z. Lis

Jean Z. Lis 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).

  • Electromagnetic valve for fluid circuits containing impurities
    Patent number: 4235414
    Abstract: The valve comprises a flap controlled in function of the pressure prevailing in a chamber limited by the flap in accordance with an escape circuit being opened or closed by an electro-magnet. The inlet of the escape circuit comprises a filter operatively mounted on the flap to be movable therewith, and the passage cross-sections of the escape circuit are greater than the biggest impurities able to pass through the filter.
    Type: Grant
    Filed: September 20, 1978
    Date of Patent: November 25, 1980
    Assignees: Societe Industrielle de Boulogne, Jean Z. Lis
    Inventor: Jean Z. Lis