STRING TENNIS

Brand Owner (click to sort) Address Description
DURAFLEX PRINCE SPORTS 1411 Broadway, 21st Floor New York NY 10018 string for tennis, racquetball, squash and badminton racquets;DURA FLEX;
DURALAST WILSON SPORTING GOODS CO. 130 East Randolph Street, Suite 600 Chicago IL 60601 string for tennis, badminton, squash, and racketball rackets;DURA-LAST;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. A tennis racket having a racket frame defining a ball-hitting face, wherein if the upper part of the ball-hitting face is set as a 0-degree position, a string protection member is mounted on at least one portion of a head part of the racket frame in a range from a clockwise 45-degree position to a clockwise 135-degree position and in a range from a clockwise 225-degree position to a clockwise 315-degree position by interposing a viscoelastic member between the string protection member and the racket frame. The moment (Is) of inertia of the tennis racket in a swing direction is set to not less than 450,000 g/cm