Patents by Inventor Timothy P. Worthley

Timothy P. Worthley 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 model control of electro-viscous fan clutch
    Patent number: 7708127
    Abstract: Accordingly, a control system for controlling a viscous clutch of a fan is provided. The control system includes a delta speed module that determines one of an over speed condition, an under speed condition, and a steady state condition based on a desired fan speed and an actual fan speed. A mode module determines a mode of the clutch based on the one of the over-speed condition, the under-speed condition, and the steady state condition, wherein the mode is one of a pump in mode, a pump out mode, and a closed loop mode. A valve control module that controls an operational state of the clutch valve based on the mode.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: May 4, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Michael A. Turley, James A. Lasecki, Timothy P. Worthley, Michael J. Melaragni, Jeffrey A. Bozeman
  • FLUID MODEL CONTROL OF ELECTRO-VISCOUS FAN CLUTCH
    Publication number: 20080185254
    Abstract: Accordingly, a control system for controlling a viscous clutch of a fan is provided. The control system includes a delta speed module that determines one of an over speed condition, an under speed condition, and a steady state condition based on a desired fan speed and an actual fan speed. A mode module determines a mode of the clutch based on the one of the over-speed condition, the under-speed condition, and the steady state condition, wherein the mode is one of a pump in mode, a pump out mode, and a closed loop mode. A valve control module that controls an operational state of the clutch valve based on the mode.
    Type: Application
    Filed: February 6, 2007
    Publication date: August 7, 2008
    Inventors: Michael A. Turley, James A. Lasecki, Timothy P. Worthley, Michael J. Melaragni, Jeffrey A. Bozeman