Patents by Inventor Ken Mathis

Ken Mathis 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).

  • Systems and methods for shift control for vehicular transmission
    Patent number: 8370032
    Abstract: Systems and methods for shift control for vehicular transmission. A transmission may shift gears at designated transmission shift points. When the slope of the road grade encountered by a vehicle changes, the transmission shift points may be altered to provide better vehicle performance. According to one embodiment, road slope may be calculated based upon vehicle acceleration and acceleration caused by pedal depression. In such an embodiment, brake indication may be calculated from the same road slope calculation without the use of a brake signal switch. If brake application is indicated by the road slope calculation, transmission shifting may be adjusted to prevent poor vehicle performance.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: February 5, 2013
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Jordan Choby, Ken Mathis
  • SYSTEMS AND METHODS FOR SHIFT CONTROL FOR VEHICULAR TRANSMISSION
    Publication number: 20090018732
    Abstract: Systems and methods for shift control for vehicular transmission. A transmission may shift gears at designated transmission shift points. When the slope of the road grade encountered by a vehicle changes, the transmission shift points may be altered to provide better vehicle performance. According to one embodiment, road slope may be calculated based upon vehicle acceleration and acceleration caused by pedal depression. In such an embodiment, brake indication may be calculated from the same road slope calculation without the use of a brake signal switch. If brake application is indicated by the road slope calculation, transmission shifting may be adjusted to prevent poor vehicle performance.
    Type: Application
    Filed: July 12, 2007
    Publication date: January 15, 2009
    Inventors: Jordon Choby, Ken Mathis