Patents by Inventor Madhukar Kumar

Madhukar 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).

  • Motor-assisted transmission
    Patent number: 9156344
    Abstract: A powertrain has an engine with a crankshaft. The powertrain includes a planetary gear set having a first, a second, and a third member. The first member is connected for common rotation with an input member. A first clutch is selectively engageable to operatively connect the crankshaft with the input member. A second clutch is selectively engageable to ground the input member with a stationary member. An electric motor/generator has a rotor operatively connected for common rotation with the second member. An output member is provided, with a set of intermeshing gears configured to transfer torque from the third member to the output member. A first gear pair and a second gear pair are operable by engagement of a first synchronizer and a second synchronizer, respectively, to provide two different fixed ratios between the input member and the output member.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: October 13, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Awadesh Tiwari, Ravikanth G V, Atul Kumar Agrawal, Madhukar Kumar, Vikas Bhu Sharma
  • MOTOR-ASSISTED TRANSMISSION
    Publication number: 20120149514
    Abstract: A powertrain has an engine with a crankshaft. The powertrain includes a planetary gear set having a first, a second, and a third member. The first member is connected for common rotation with an input member. A first clutch is selectively engageable to operatively connect the crankshaft with the input member. A second clutch is selectively engageable to ground the input member with a stationary member. An electric motor/generator has a rotor operatively connected for common rotation with the second member. An output member is provided, with a set of intermeshing gears configured to transfer torque from the third member to the output member. A first gear pair and a second gear pair are operable by engagement of a first synchronizer and a second synchronizer, respectively, to provide two different fixed ratios between the input member and the output member.
    Type: Application
    Filed: December 13, 2010
    Publication date: June 14, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Awadesh Tiwari, Ravikanth GV, Atul Kumar Agrawal, Madhukar Kumar, Vikas Bhu Sharma