Patents by Inventor Walter Beer

Walter Beer 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).

  • Method and apparatus for testing ball striking rackets
    Patent number: 4599898
    Abstract: The quality of dynamic behavior of tennis rackets and/or selected parts of tennis rackets is ascertained by vibrating the rackets and by monitoring one or more parameters of vibratory movement which are indicative of the quality of the corresponding part of or the entire racket. The rackets and/or selected parts of the rackets can be vibrated at a constant or at a variable frequency for selected intervals of time. The parameter may constitute the slope of the curves denoting the phase of vibration, the frequency of vibration, the width of the resonance frequency of the selected part and/or others.
    Type: Grant
    Filed: October 2, 1984
    Date of Patent: July 15, 1986
    Inventor: Walter Beer