Patents by Inventor Sujan Dhar

Sujan Dhar 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).

  • Pressure compensated external gear machine
    Patent number: 11125227
    Abstract: Devices and systems relating to external gear machines that comprise microsurface shaping on the lateral surfaces of the gear teeth and/or bushing surfaces are provided. Such microsurface shaping may comprise a flat step to linear wedge profile, a flat step to flat step profile, or solely a linear wedge profile. The incorporation of microsurface shaping on the gear teeth and/or bushing plates contributes to improving the lubrication performance within the external gear machine and provides significant benefits, including the improvement of operating efficiency, life, and reliability of the system components. Methods for manufacturing the gear teeth and related bushings are also provided, the methods configured to optimize the overall axial balance within the system.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: September 21, 2021
    Assignee: Purdue Research Foundation
    Inventors: Andrea Vacca, Sujan Dhar, Divya Thiagarajan
  • PRESSURE COMPENSATED EXTERNAL GEAR MACHINE
    Publication number: 20200088285
    Abstract: Devices and systems relating to external gear machines that comprise microsurface shaping on the lateral surfaces of the gear teeth and/or bushing surfaces are provided. Such microsurface shaping may comprise a flat step to linear wedge profile, a flat step to flat step profile, or solely a linear wedge profile. The incorporation of microsurface shaping on the gear teeth and/or bushing plates contributes to improving the lubrication performance within the external gear machine and provides significant benefits, including the improvement of operating efficiency, life, and reliability of the system components. Methods for manufacturing the gear teeth and related bushings are also provided, the methods configured to optimize the overall axial balance within the system.
    Type: Application
    Filed: February 21, 2017
    Publication date: March 19, 2020
    Applicant: Purdue Research Foundation
    Inventors: Andre Vacca, Sujan Dhar, Divya Thiagarajan