Patents by Inventor Fred Stuebner

Fred Stuebner 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).

  • Self-aligning ultrasonic displacement sensor system, apparatus and method for detecting surface vibrations
    Patent number: 6809249
    Abstract: Ultrasonic transducing elements (11, 12) are used to measure vibrations of a nearby musical drumhead or other vibrating surface (13). A first ultrasonic transducer (11) emits an ultrasonic signal (14) and a second ultrasonic transducer (12) listens for an echo of that signal (14). A phase change of the echoed (reflected) signal (202) is compared to a reference signal (206) to create a representation signal (216) which represents the movement of the drumhead or other vibrating surface (13). For this comparison to be properly made, a deviation signal (220) is generated that defines an average deviation of the reference signal (206) from optimum, which is then used to self-align the reference signal (206) to the reflected signal (202).
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: October 26, 2004
    Assignee: Protune Corp.
    Inventors: Fred Stuebner, Jesse Aronstein
  • Self-aligning ultrasonic displacement sensor system, apparatus and method for detecting surface vibrations
    Publication number: 20030005816
    Abstract: Ultrasonic transducing elements (11, 12) are used to measure vibrations of a nearby musical drumhead or other vibrating surface (13). A first ultrasonic transducer (11) emits an ultrasonic signal (14) and a second ultrasonic transducer (12) listens for an echo of that signal (14). A phase change of the echoed (reflected) signal (202) is compared to a reference signal (206) to create a representation signal (216) which represents the movement of the drumhead or other vibrating surface (13). For this comparison to be properly made, a deviation signal (220) is generated that defines an average deviation of the reference signal (206) from optimum, which is then used to self-align the reference signal (206) to the reflected signal (202).
    Type: Application
    Filed: January 9, 2002
    Publication date: January 9, 2003
    Applicant: Protune Corp.
    Inventors: Fred Stuebner, Jesse Aronstein