Patents by Inventor Mallappa Ishwarappa Guggari

Mallappa Ishwarappa Guggari 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: 8172740
    Abstract: The present disclosure is generally directed to centrifuge systems and methods for controlling centrifuge systems, wherein the systems in certain aspects are adapted for processing material, e.g., but not limited to drilling fluids with solids therein. One illustrative method includes providing a centrifuge system that is made up of, among other things, a bowl, a bowl motor system, a bowl variable frequency drive, a conveyor, a conveyor motor, a conveyor variable frequency drive, a pump, a pump motor, and a pump variable frequency drive. Additionally, the centrifuge system includes a control system that is adapted to control the bowl variable frequency drive, the conveyor variable frequency drive, and the pump variable frequency drive. The method includes controlling the centrifuge system in the G-force differential control mode by controlling the G-force on the bowl as the bowl is rotated by the bowl motor system so that the G-force on the bowl does not exceed a pre-set maximum G-force.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: May 8, 2012
    Assignee: National Oilwell Varco L.P.
    Inventors: Khaled El Dorry, George Edward Smith, Mallappa Ishwarappa Guggari, William L. Koederitz
  • Publication number: 20090105059
    Abstract: Centrifuge systems and methods for controlling centrifuge systems, the systems in certain aspects for processing material, e.g., but not limited to drilling fluids with solids therein. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).
    Type: Application
    Filed: August 29, 2008
    Publication date: April 23, 2009
    Inventors: Khaled El Dorry, George Edward Smith, Mallappa Ishwarappa Guggari, William L. Koederitz