Patents by Inventor Steven A. Caskey

Steven A. Caskey 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).

  • Publication number: 20100013329
    Abstract: An oil cooled electric drive module for hybrid vehicles includes an AC motor assembly having a shaft parallel to an output shaft, with the shafts being interconnected by a set of helical reduction gears. The motor shaft is provided with a rotary union for cooling oil that passes first axially and then radially through the shaft to an outer circumferential surface thereof beneath the core of a rotor attached thereto. The cooling oil passes beneath the rotor to the outer ends thereof, where annular deflectors disburse the oil to provide a coanda effect over the shorting rings of the rotor, onto the stator windings, and thence onto the motor housing for return to a cooling sump, which may include hydraulic and electric pumps for further desired cooling circulation. The invention also includes solenoid valves for shifting a splined collar between positions of interconnection and disconnection between the motor shaft and output shaft.
    Type: Application
    Filed: July 17, 2008
    Publication date: January 21, 2010
    Inventors: David C. Heidenreich, Steven A. Caskey
  • Publication number: 20100012409
    Abstract: An oil cooled electric drive module for hybrid vehicles includes an AC motor assembly having a shaft parallel to an output shaft, with the shafts being interconnected by a set of helical reduction gears. The motor shaft is provided with a rotary union for cooling oil that passes first axially and then radially through the shaft to an outer circumferential surface thereof beneath the core of a rotor attached thereto. The cooling oil passes beneath the rotor to the outer ends thereof, where annular deflectors disburse the oil to provide a coanda effect over the shorting rings of the rotor, onto the stator windings, and thence onto the motor housing for return to a cooling sump, which may include hydraulic and electric pumps for further desired cooling circulation. The invention also includes solenoid valves for shifting a splined collar between positions of interconnection and disconnection between the motor shaft and output shaft.
    Type: Application
    Filed: February 2, 2009
    Publication date: January 21, 2010
    Inventors: DAVID C. HEIDENREICH, Steven A. Caskey