Patents by Inventor W. Robert Bunch

W. Robert Bunch 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).

  • Chain code position detector
    Patent number: 6327791
    Abstract: A position detector for sensing the position of a movable member which moves along an axis relative to a stationary member. A nonrepeating N bit chain code embodied in a scale on the movable member runs along the axis. A detector fixed to the stationary member is positioned to sense a portion of the chain code. The detector has K elements (K>>N) generating a plurality of signals. A controller determines the position of the movable member relative to the stationary member as a function of the signals.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: December 11, 2001
    Assignees: The Government of the United States as represented by the Secretary of Commerce, National Institute of Standards and Technology
    Inventors: Richard J. Norcross, David P. Engvall, W. Robert Bunch