Patents Assigned to Knight Equipment International, Inc.
  • Air gap device with interchangeable parts
    Patent number: 5673725
    Abstract: An air gap, venturi-type mixer for mixing a liquid chemical with water includes a readily field-exchangeable collimator, water seal and venturi unit to accommodate different flow rates. The venturi unit includes a funnel with slightly inclined walls that direct a misaligned collimated water stream into the vena contracta of the venturi without reducing its speed or entraining any air.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: October 7, 1997
    Assignee: Knight Equipment International, Inc.
    Inventors: William Knight Russell, Paul M. Beldham, Jeffrey J. Lukawski, Christopher W. Nesselroad