Patents by Inventor Keith Holmquist

Keith Holmquist 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: 6788096
    Abstract: A method of measuring current in a pulse count positioning system is provided, wherein various motor conditions such as back up due to cogging and/or gear train affects are taken into account in measuring current pulses that are correlated with the position of an electric device such as an automotive accessory. The method generally includes measuring current flow through an electric motor at regular intervals, summing the current flow at a second interval, storing the summed current flow as a current pulse occurs, starting a new sum of the current flow, and comparing sums for a previous two sums after a maximum timeout. Accordingly, the method according to the present invention takes various motor conditions into account for a more accurate measurement of current pulses, which correspond with the position of the electric device.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: September 7, 2004
    Assignee: Kelsey-Hayes Co.
    Inventors: Keith Holmquist, Jim Dean, Larry Schmidt
  • Publication number: 20030193340
    Abstract: A method of measuring current in a pulse count positioning system is provided, wherein various motor conditions such as back up due to cogging and/or gear train affects are taken into account in measuring current pulses that are correlated with the position of an electric device such as an automotive accessory. The method generally comprises measuring current flow through an electric motor at regular intervals, summing the current flow at a second interval, storing the summed current flow as a current pulse occurs, starting a new sum of the current flow, and comparing sums for a previous two sums after a maximum timeout. Accordingly, the method according to the present invention takes various motor conditions into account for a more accurate measurement of current pulses, which correspond with the position of the electric device.
    Type: Application
    Filed: April 12, 2002
    Publication date: October 16, 2003
    Inventors: Keith Holmquist, Jim Dean, Larry Schmidt