Patents Assigned to Jean Z. Lis
  • 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