Patents Assigned to Societe Anonyme dite: CECA S.A.
  • Method and apparatus for determining permeability of filter media
    Patent number: 4128004
    Abstract: In the measurement of the permeability of a filter medium a cake of the medium is formed in a holder by supplying an excess of the medium, as a suspension under pressure, to the holder, the pressure being relieved and the excess portion being removed to leave an undried cake of medium when the excess portion has dried to a given level as sensed by a pair of electrodes. Two further electrodes are used to determine the time for a given volume of liquid to pass through the cake for measuring its permeability.
    Type: Grant
    Filed: September 22, 1978
    Date of Patent: December 5, 1978
    Assignee: Societe Anonyme dite: CECA S.A.
    Inventors: Jacques Caron, Jean-Claude Poncet, Bernard Varney