Patents Assigned to Karl-Eberhard Mauve
  • Process and device for measuring the tension of racket strings
    Patent number: 5007294
    Abstract: A method and device for measuring the string tension of a strung racket such as a tennis racket wherein a mechanical/electrical transmitter is attached to the membrane made from the racket strings mounted crosswise onto a frame and measures the frequency of the membrane. The membrane is induced to freely oscillate in an aperiodically (non-periodically) manner by a light stroke onto the frame or by dropping a ball onto the membrane. The measured frequency is proportional to the string tension which is indicated by a display.
    Type: Grant
    Filed: June 21, 1989
    Date of Patent: April 16, 1991
    Assignee: Karl-Eberhard Mauve
    Inventor: Klaus Matjasic