Patents by Inventor David Popejoy

David Popejoy 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).

  • Patent number: 8683876
    Abstract: A load sensor assembly for measuring an amount of torque transmitted through a torque establishing element includes a core mounted on a transmission housing and a load sensor mounted on the core. The load sensor is positioned against a portion of the torque establishing element whereby a portion of the amount of torque transmitted through the torque establishing element travels through the load sensor and is measured. A cable is connected to the load sensor for transmitting a signal representative of the amount of torque to a transmission controller.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: April 1, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Yuji Fujii, Ted D. Snyder, Gregory Michael Pietron, James William Loch McCallum, Mohamed Redissi, David Popejoy, Jau-wen Tseng, Seung-hoon Lee
  • Patent number: 8342998
    Abstract: A load sensor assembly for measuring an amount of torque transmitted through a torque establishing element includes a core mounted on a transmission housing and a load sensor mounted on the core. The load sensor is positioned against a portion of the torque establishing element whereby a portion of the amount of torque transmitted through the torque establishing element travels through the load sensor and is measured. A cable is connected to the load sensor for transmitting a signal representative of the amount of torque to a transmission controller.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: January 1, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Yuji Fujii, Ted D. Snyder, Gregory Michael Pietron, James William Loch McCallum, Mohamed Redissi, David Popejoy, Jau-Wen Tseng, Seung-Hoon Lee
  • Patent number: 8255130
    Abstract: A closed loop shift control apparatus and method based on friction element load controls a torque transfer phase when shifting from a low gear configuration to a high gear configuration for an automatic transmission system. When pressure actuated friction elements are selectively engaged and released to establish torque flow paths in the transmission, measurements or estimates of torsional load exerted on the off-going friction element are used to predict the optimal off-going friction element release timing for achieving a consistent shift feel. The ideal timing to release the off-going friction element is uniquely defined when torque load exerted onto the off-going friction element becomes substantially zero. An on-coming clutch engagement process is controlled by a closed loop control based on measurements or estimates of on-coming clutch torque capacity for a constant shift feel under dynamically changing conditions.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: August 28, 2012
    Assignee: Ford Global Technologies, LLC
    Inventors: Yuji Fujii, Gregory Michael Pietron, Seung-Hoon Lee, James William Loch McCallum, Mohamed Redissi, David Popejoy, John Butwin, Robert Orley Burkhart, Diana Yanakiev
  • Publication number: 20100261578
    Abstract: A load sensor assembly for measuring an amount of torque transmitted through a torque establishing element includes a core mounted on a transmission housing and a load sensor mounted on the core. The load sensor is positioned against a portion of the torque establishing element whereby a portion of the amount of torque transmitted through the torque establishing element travels through the load sensor and is measured. A cable is connected to the load sensor for transmitting a signal representative of the amount of torque to a transmission controller.
    Type: Application
    Filed: April 9, 2009
    Publication date: October 14, 2010
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Yuji Fujii, Ted D. Snyder, Gregory Michael Pietron, James William Loch McCallum, Mohamed Redissi, David Popejoy, Jau-Wen Tseng, Seung-Hoon Lee
  • Publication number: 20100262344
    Abstract: A closed loop shift control apparatus and method based on friction element load controls a torque transfer phase when shifting from a low gear configuration to a high gear configuration for an automatic transmission system. When pressure actuated friction elements are selectively engaged and released to establish torque flow paths in the transmission, measurements or estimates of torsional load exerted on the off-going friction element are used to predict the optimal off-going friction element release timing for achieving a consistent shift feel. The ideal timing to release the off-going friction element is uniquely defined when torque load exerted onto the off-going friction element becomes substantially zero. An on-coming clutch engagement process is controlled by a closed loop control based on measurements or estimates of on-coming clutch torque capacity for a constant shift feel under dynamically changing conditions.
    Type: Application
    Filed: April 9, 2009
    Publication date: October 14, 2010
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Yuji Fujii, Gregory Michael Pietron, Seung-Hoon Lee, James William Loch McCallum, Mohamed Redissi, David Popejoy, John Butwin, Robert Orley Burkhart, Diana Yanakiev