Patents by Inventor Andrew W. Gubbels

Andrew W. Gubbels 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).

  • Three-dimensional digital ultrasound tracking system
    Patent number: 5515853
    Abstract: A method and apparatus for simultaneous measurement of multiple distances by means of networked piezoelectric transducers. Through the use of high frequency digital counters, the propagation delay between the activation of an ultrasonic transducer and the reception by similar transducers is quickly and accurately defined. By alternating the duty cycle between transmit and receive modes, the system can track and triangulate the three-dimensional positions for each transducer.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: May 14, 1996
    Assignee: Sonometrics Corporation
    Inventors: Wayne L. Smith, Ivan Vesely, Andrew W. Gubbels