Tennis racquet head with diagonal strings - uses two strings to form taut grid system which does not slacken if one string breaks

摘要

The tennis racquet head has diagonal strings with homogeneous tensile stress. Two strings are used, or possibly one continuous string, and are strung not horizontally and vertically as usual, but diagonally in relation to the imaginary grid system of coordinates (X/Y). ADVANTAGE - The tennis racquet head, by being strung with two strings, does not lose its tensional field if one string breaks.