Patents by Inventor Ken Liesener

Ken Liesener 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).

  • Fluid clutch fill detection system and method
    Patent number: 6640950
    Abstract: A method of controlling a transmission is provided. A command is received to engage a clutch having a chamber. A control valve is opened to allow pressurized fluid to flow from a fluid supply line into the clutch chamber. The pressure of the fluid within the fluid supply line is monitored as fluid flows through the control valve to enter the clutch chamber. A rate of change in the volume of fluid entering the chamber is determined based on the sensed pressure of the fluid within the fluid supply line. A fill point of the clutch chamber is detected when the rate of change in the volume of fluid entering the chamber is less than a volume differential threshold.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: November 4, 2003
    Assignee: Caterpillar Inc.
    Inventors: Keith F. Harvey, Javad Hosseini, Ken Liesener, Brad McCunn, Gregory Menke
  • Fluid clutch fill detection system and method
    Publication number: 20030121748
    Abstract: A method of controlling a transmission is provided. A command is received to engage a clutch having a chamber. A control valve is opened to allow pressurized fluid to flow from a fluid supply line into the clutch chamber. The pressure of the fluid within the fluid supply line is monitored as fluid flows through the control valve to enter the clutch chamber. A rate of change in the volume of fluid entering the chamber is determined based on the sensed pressure of the fluid within the fluid supply line. A fill point of the clutch chamber is detected when the rate of change in the volume of fluid entering the chamber is less than a volume differential threshold.
    Type: Application
    Filed: December 28, 2001
    Publication date: July 3, 2003
    Inventors: Keith F. Harvey, Javad Hosseini, Ken Liesener, Brad McCunn, Gregory Menke