发明名称 Interlocking string network for sports rackets
摘要 The invention is an improved sports racket comprising streamlined transversal strings and streamlined longitudinal strings with surface indentations that permit the strings to lock into other at the string crossings so the strings do not move with respect to each other and also stay oriented so as to minimize wind resistance during the swinging motion of the sports racket before and after ball contact. The invention includes a spacer for assembly of the strings in the sports racket incorporating a flexible body between the string and the racket frame for the absorption and restitution of part of the ball's kinetic energy during impact with the string to beneficially alter the feel of the strings.
申请公布号 US6506134(B2) 申请公布日期 2003.01.14
申请号 US20010905541 申请日期 2001.07.13
申请人 BERTOLOTTI FABIO PAOLO 发明人 BERTOLOTTI FABIO PAOLO
分类号 A63B49/00;A63B51/02;A63B51/10;(IPC1-7):A63B51/02 主分类号 A63B49/00
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