Patents Assigned to Progress Water Technologies Corp.
  • Device for continuous contacting of liquids and solids
    Patent number: 5069883
    Abstract: A liquid-solid contacting device having a plurality of chambers communicating with a cylindrical valve. The valve is situated in the central axis of the device and provides distribution and collection of a liquid to and from each of the plurality of chambers. The present invention provides an evenly distributed and adjustable pressure on sliding surfaces that substantially prevent leakage of process fluid.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: December 3, 1991
    Assignee: Progress Water Technologies Corp.
    Inventor: Philip J. Matonte