Patents Assigned to Copa Research Limited
  • Effluent filtration and sack filter apparatus
    Patent number: 5286387
    Abstract: Apparatus for filtering liquid effluent comprises, in sequence, inlet means, filtration means, and outlet means. Each filtration means comprises at least one disposable sack filter (2, 3, 4, 31) of defined porosity. The open end of each sack filter is attached to an outlet conduit in communication with the inlet means. The opposing closed ends of the sack filters are attached to movable supports to cause agitation of the sack filters.
    Type: Grant
    Filed: May 5, 1993
    Date of Patent: February 15, 1994
    Assignee: Copa Research Limited
    Inventor: David Froud