Patents by Inventor Anandan Velayutham Rajarathnam

Anandan Velayutham Rajarathnam 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).

  • Method and system for determining a washing machine load unbalance
    Patent number: 7905122
    Abstract: A clothes washing machine system including a method of detecting a load unbalance. The washing machine system includes a cabinet having a drum rotatably mounted therein. A motor is coupled to the drum for rotating the drum within the cabinet. A memory device is accessible by a processor, such as a digital signal processor (DSP). The memory contains program code for implementing a method that includes determining the motor torque ripple, determining the motor speed, and determining the load unbalance mass based on the motor torque and speed.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: March 15, 2011
    Assignee: Nidec Motor Corporation
    Inventors: Peter Murray, Michael I Henderson, Darko Marcetic, Joseph G Marcinkiewicz, Vinodkumar Sadasivam, Anandan Velayutham Rajarathnam
  • Method and system for determinging a washing machine load unbalance
    Publication number: 20040211009
    Abstract: A clothes washing machine system including a method of detecting a load unbalance. The washing machine system includes a cabinet having a drum rotatably mounted therein. A motor is coupled to the drum for rotating the drum within the cabinet. A memory device is accessible by a processor, such as a digital signal processor (DSP). The memory contains program code for implementing a method that includes determining the motor torque ripple, determining the motor speed, and determining the load unbalance mass based on the motor torque and speed.
    Type: Application
    Filed: September 4, 2003
    Publication date: October 28, 2004
    Applicant: Emerson Electric Co.
    Inventors: Peter Murray, Michael I. Henderson, Darko Marcetic, Joseph G. Marcinkiewicz, Vinodkumar Sadasivam, Anandan Velayutham Rajarathnam