Patents by Inventor Joseph Slayton

Joseph Slayton 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).

  • Coasting downshift control for automatic transmissions
    Patent number: 7089102
    Abstract: An automatic transmission ratio shift control system and method for a powertrain having an engine and multiple-ratio gearing controlled by friction elements actuated by hydraulic pressure, an electronic controller for establishing torque transitions among the friction elements as the gear ratio changes, the engine speed being controlled by an electronic throttle control. The strategy employs an electronic throttle and closed loop engine speed control and uses fuel and air as an energy source to increase engine speed during a power-off downshift. The engine speed is boosted to a level close to the synchronous speed in conjunction with release of the off-going friction element. The on-coming friction element is then applied as the engine speed approaches a desired speed. The engine speed increase is timed to lead an increase in torque converter speed.
    Type: Grant
    Filed: September 12, 2003
    Date of Patent: August 8, 2006
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph Slayton, Bradley Riedle, Pramod Jain, Balaram Sankpal, Steven Meisner, David Bidner, Armand Giannamore
  • Coasting downshift control for automatic transmissions
    Publication number: 20050060077
    Abstract: An automatic transmission ratio shift control system and method for a powertrain having an engine and multiple-ratio gearing controlled by friction elements actuated by hydraulic pressure, an electronic controller for establishing torque transitions among the friction elements as the gear ratio changes, the engine speed being controlled by an electronic throttle control. The strategy employs an electronic throttle and closed loop engine speed control and uses fuel and air as an energy source to increase engine speed during a power-off downshift. The engine speed is boosted to a level close to the synchronous speed in conjunction with release of the off-going friction element. The on-coming friction element is then applied as the engine speed approaches a desired speed. The engine speed increase is timed to lead an increase in torque converter speed.
    Type: Application
    Filed: September 12, 2003
    Publication date: March 17, 2005
    Inventors: Joseph Slayton, Bradley Riedle, Pramod Jain, Balaram Sankpal, Steven Meisner, David Bidner, Armand Giannamore