发明名称 Play racquet e.g. for ball such as tennis, has framework for allowing springing covering and shaft connected from framework and shaft is racquet grip
摘要 <p>The ball play racquet has a racquet framework (2) for allowing a springing covering (4) and a shaft. Connected from the racquet framework and shaft is a racquet grip, where the framework (2) and the shaft is a hollow frame made of several layers. The walls of the racquet framework and or the shaft (6, 6a) increase of rigidity of the racquet (1). Between two layers a span (11, 12) is created. The span, provides a spacer between the layers and is of a material having a density lower than density of the layers. The spacer situation is made from a small specific weight material and provided from a honeycombed structure.</p>
申请公布号 DE102004054190(B3) 申请公布日期 2006.05.18
申请号 DE20041054190 申请日期 2004.11.10
申请人 VOELKL TENNIS GMBH, BAAR 发明人 SCHWENGER, RALF
分类号 A63B49/02 主分类号 A63B49/02
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