Patents by Inventor Chino D. Imediegwu

Chino D. Imediegwu 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).

  • Dual pump design for hybrid electric automatic transmission
    Patent number: 7972239
    Abstract: A dual pump strategy for a hybrid electric automatic transmission necessitating one internal mechanically driven pump linked to the engine output shaft and an external fixed displacement pump powered by a brushless permanent magnet motor consisting of a controller with closed loop feedback control for operating such is disclosed. In neutral and electric drive mode, with the engine off, the flow demand for the transmission is sustained largely by the external pump.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: July 5, 2011
    Assignee: Caterpillar Inc.
    Inventor: Chino D. Imediegwu
  • DUAL PUMP DESIGN FOR HYBRID ELECTRIC AUTOMATIC TRANSMISSION
    Publication number: 20090203497
    Abstract: A dual pump strategy for a hybrid electric automatic transmission necessitating one internal mechanically driven pump linked to the engine output shaft and an external fixed displacement pump powered by a brushless permanent magnet motor consisting of a controller with closed loop feedback control for operating such is disclosed. In neutral and electric drive mode, with the engine off, the flow demand for the transmission is sustained largely by the external pump.
    Type: Application
    Filed: February 12, 2008
    Publication date: August 13, 2009
    Applicant: CATERPILLAR INC.
    Inventor: Chino D. Imediegwu