Patent ID: 6132325
Filing Date: 2000-10-17
Classification: A63B

Abstract:
A sports racket comprising:a) a frame with a handle;b) a throat connected to the handle;c) a head connected to the throat, said head defining a central opening to be spanned by strings, said head having a means for securing strings to the frame;d) a plurality of transversal strings running essentially parallel to each other and secured to the frame;e) a plurality of longitudinal strings secured to the frame and running essentially orthogonal to, and in contact with, the transversal strings to form a substantially planar string network within the central opening, each contact of said transversal strings with said longitudinal strings being herein referred to as a string crossing; andf) at least one string crossing with at least one of the longitudinal strings involved in the string crossing having a first surface indentation positioned at the string crossing and localized in extent to said string crossing the transversal string involved in the string crossing having a second surface indentation positioned at the location of the string crossing and localized in extent to said string crossing the first surface indentation matching and interlocking with the second surface indentation at approximately a 90 degree angle to produce a common contact surface having a lateral portion thereof tilted away from the mid-plane of the substantially planar string network so as to support stresses leading to lateral forces that oppose the movement of the longitudinal string relative to the transversal string.