Patents by Inventor Mark H. Litchfield

Mark H. Litchfield 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).

  • System and method for determining orientation based on solar positioning
    Patent number: 7315781
    Abstract: Determination of the orientation of a unit is based on solar positioning. An actual measurement of the position of the sun is taken and compared to a theoretical determination of the position of the sun. By comparing the actual and theoretical positions, the orientation of the unit is determined in an accurate, reliable, and economical manner.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: January 1, 2008
    Assignee: Textron Systems Corporation
    Inventors: Mark H. Litchfield, David Delude, Joseph McCormack
  • System and method for determining orientation based on solar positioning
    Patent number: 7079944
    Abstract: Determination of the orientation of a unit is based on solar positioning. An actual measurement of the position of the sun is taken and compared to a theoretical determination of the position of the sun. By comparing the actual and theoretical positions, the orientation of the unit is determined in an accurate, reliable, and economical manner.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: July 18, 2006
    Assignee: Textron Systems Corporation
    Inventors: Mark H. Litchfield, David Delude, Joseph McCormack