Patents Assigned to Filter Technologies Pty Ltd
  • Liquid filtering apparatus
    Patent number: 6077422
    Abstract: A liquid filtering apparatus which reduces or eliminates the need for regular manual cleaning or backwashing. Backwashing of the filter occurs automatically in response to sensed conditions of filtering. The filtering apparatus includes a chamber, and a filter element in the chamber, a valve for directing liquid through the filtering element in a first direction to filter the liquid. The valve reverses the direction of liquid flow through the filtering element when excessive resistance to flow through the filter element occurs.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: June 20, 2000
    Assignee: Filter Technologies Pty Ltd
    Inventor: Louis Ryles