Patents by Inventor Selva X. Kumar

Selva X. Kumar 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).

  • Methods and apparatus for controlling impurity levels in an enclosed printing press environment
    Patent number: 8512112
    Abstract: Methods and apparatus for controlling impurity levels in an enclosed printing press environment are disclosed. A disclosed system controls impurity levels by using variable speed fans to control the intake of air into the enclosed environment and the exhausting of air from the enclosed environment. The exhaust fan is used to control the impurity levels within the enclosed environment. Adjustments to the speed of the exhaust fan are based on sensors which measure impurity levels in the enclosed environment. The intake fan is used to maintain a constant static pressure level within the enclosed environment. Adjustments to the intake fan speed are based on static pressure sensors within the enclosed environment.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: August 20, 2013
    Assignee: R.R. Donnelley & Sons Company
    Inventor: Selva X. Kumar
  • Methods and apparatus for controlling impurity levels in an enclosed printing press environment
    Patent number: 7066091
    Abstract: Methods and apparatus for controlling impurity levels in an enclosed printing press environment are disclosed. A disclosed system controls impurity levels by using variable speed fans to control the intake of air into the enclosed environment and the exhausting of air from the enclosed environment. The exhaust fan is used to control the impurity levels within the enclosed environment. Adjustments to the speed of the exhaust fan are based on sensors which measure impurity levels in the enclosed environment. The intake fan is used to maintain a constant static pressure level within the enclosed environment. Adjustments to the intake fan speed are based on static pressure sensors within the enclosed environment.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: June 27, 2006
    Assignee: R.R. Donnelley & Sons Company
    Inventor: Selva X. Kumar
  • Methods and apparatus for controlling impurity levels in an enclosed printing press environment
    Publication number: 20040250722
    Abstract: Methods and apparatus for controlling impurity levels in an enclosed printing press environment are disclosed. A disclosed system controls impurity levels by using variable speed fans to control the intake of air into the enclosed environment and the exhausting of air from the enclosed environment. The exhaust fan is used to control the impurity levels within the enclosed environment. Adjustments to the speed of the exhaust fan are based on sensors which measure impurity levels in the enclosed environment. The intake fan is used to maintain a constant static pressure level within the enclosed environment. Adjustments to the intake fan speed are based on static pressure sensors within the enclosed environment.
    Type: Application
    Filed: June 16, 2003
    Publication date: December 16, 2004
    Inventor: Selva X. Kumar