Patents by Inventor Keshava Basavapatna Kumar

Keshava Basavapatna 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).

  • Screw rotor tip with a reverse curve
    Patent number: 6422847
    Abstract: A rotor for a screw rotor machine includes a shaft and a plurality of lobes disposed on the shaft, each of the lobes extending radially outward from the shaft and having a tip surface, a rear surface and a transition section disposed between the tip surface and the rear surface, the transition section having an arcuate portion, a middle portion and a short radius portion, the arcuate portion being concave in shape so as to open away from the shaft and transition the tip surface into the middle portion.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: July 23, 2002
    Assignee: Carrier Corporation
    Inventors: James William Bush, Keshava Basavapatna Kumar