Patent ID: 7081056

Claim:
A racket comprising: a frame having a handle defining a longitudinal axis; a head connected to the handle and defining a racket face, wherein the head has parallel first and second transversal sides and parallel first and second longitudinal sides, wherein the first and second transversal sides and the first and second longitudinal sides are firmly connected together at their ends such that each of the sides is substantially inflexible in relation to the other sides; a plurality of transversal strings extending between the first and second longitudinal sides and substantially covering the racket face, wherein the transversal strings are of substantially identical length, wherein the transversal strings run essentially parallel to each other, wherein the transversal strings are generally perpendicular to the longitudinal axis, and wherein at least three of the transversal strings are strung from a first single string; and, a plurality of longitudinal strings extending between the first and second transversal sides and substantially covering the racket face, wherein the longitudinal strings are of substantially identical length, wherein the longitudinal strings run essentially parallel to each other, wherein the longitudinal strings are generally parallel to the longitudinal axis, and wherein at least three of the longitudinal strings are strung from a second single string; wherein the transversal strings and the longitudinal strings are of unequal length, and wherein the tension and/or mass values of the transversal strings and the longitudinal strings are selected so that the vibrational frequencies of the transversal and longitudinal strings are equal.