Patents by Inventor Kumudika Premathilake

Kumudika Premathilake has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8226823
    Abstract: A salometer and flow rate sensor assembly for a water softener system including a brine tank containing a brine solution including at least one sensor housing provided in the brine tank, a first detector set associated with the housing and configured for indicating whether the brine solution is adequately concentrated and a second detector set associated with the housing and configured for measuring the brine solution flow rate during brine draw and refill cycles of regeneration.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: July 24, 2012
    Assignee: Culligan International Company
    Inventors: Kerry Quinn, Gene Wayman, Kumudika Premathilake, Bill Lathouris
  • Patent number: 8180489
    Abstract: A communication system for a water softener system that includes a controller configured for communicating with the water softener assembly and a remote display configured for sending and receiving at least one signal to and from the controller to a remote location.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: May 15, 2012
    Assignee: Culligan International Company
    Inventors: Kerry Quinn, Kumudika Premathilake
  • Patent number: 8133385
    Abstract: A grey water treatment system for use in conjunction with a water softener, including a grey water holding tank including a first inlet configured to receive grey water and a second inlet configured to receive spent brine from the water softener. The spent brine is mixed with the grey water in the holding tank to flocculate suspended solids in the grey water for subsequent removal.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: March 13, 2012
    Assignee: Culligan International Company
    Inventors: Kumudika Premathilake, Gene Wayman, Sharyn Schnabel, Kerry Quinn
  • Publication number: 20100200484
    Abstract: A grey water treatment system for use in conjunction with a water softener, including a grey water holding tank including a first inlet configured to receive grey water and a second inlet configured to receive spent brine from the water softener. The spent brine is mixed with the grey water in the holding tank to flocculate suspended solids in the grey water for subsequent removal.
    Type: Application
    Filed: February 6, 2009
    Publication date: August 12, 2010
    Inventors: Kumudika Premathilake, Gene Wayman, Sharyn Schnabel, Kerry Quinn
  • Patent number: 7556738
    Abstract: An apparatus and method for determining the end of a service step and the duration of a brine/slow rinse step in a water conditioner having a bed of ion-exchange material. A sensor probe and a reference probe are positioned in the bed of ion-exchange material vertically displaced from each other. Voltage from each of the probes are monitored over a plurality of time intervals. When the percent increase in the impedance ratio exceeds a pre-specified value the end of a service step is identified and a regeneration cycle is initiated. During the regeneration step, the rate of change in the impedance ratio of the sensor probe to the reference probe is calculated and used to detect two peaks in the rate of change of impedance ratio between the sensor probe and the reference probe, followed by terminating the brine/slow rinse step after both peaks have been detected.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: July 7, 2009
    Assignee: Culligan International Company
    Inventors: Kumudika Premathilake, John VanNewenhizen
  • Publication number: 20090090674
    Abstract: A communication system for a water softener system that includes a controller configured for communicating with the water softener assembly and a remote display configured for sending and receiving at least one signal to and from the controller to a remote location.
    Type: Application
    Filed: September 26, 2008
    Publication date: April 9, 2009
    Inventors: Kerry Quinn, Kumudika Premathilake
  • Publication number: 20090056422
    Abstract: A salometer and flow rate sensor assembly for a water softener system including a brine tank containing a brine solution including at least one sensor housing provided in the brine tank, a first detector set associated with the housing and configured for indicating whether the brine solution is adequately concentrated and a second detector set associated with the housing and configured for measuring the brine solution flow rate during brine draw and refill cycles of regeneration.
    Type: Application
    Filed: August 26, 2008
    Publication date: March 5, 2009
    Inventors: Kerry Quinn, Gene Wayman, Kumudika Premathilake, Bill Lathouris
  • Publication number: 20060266710
    Abstract: An apparatus and method for determining the end of a service step and the duration of a brine/slow rinse step in a water conditioner having a bed of ion-exchange material. A sensor probe and a reference probe are positioned in the bed of ion-exchange material vertically displaced from each other. Voltage from each of the probes are monitored over a plurality of time intervals. When the percent increase in the impedance ratio exceeds a pre-specified value the end of a service step is identified and a regeneration cycle is initiated. During the regeneration step, the rate of change in the impedance ratio of the sensor probe to the reference probe is calculated and used to detect two peaks in the rate of change of impedance ratio between the sensor probe and the reference probe, followed by terminating the brine/slow rinse step after both peaks have been detected.
    Type: Application
    Filed: May 26, 2005
    Publication date: November 30, 2006
    Inventors: Kumudika Premathilake, John Newenhizen