发明名称 Tennis trainer racquet assembly
摘要 The tennis trainer (1) has a hitting surface (2), which is flexibly connected to the grip (3). The grip can only be pivoted in a plane (4), which is at right angles to the hitting surface, and contains the longitudinal centre axis (5) of the trainer. Hitting surface and grip are connected via an elastic shaft (7). The head (6) and grip are connected via a joint (9). The two parts of the joint are pivoted relative to each other about a pin (10), which is at right angles to pivot plane and centre axis. The threshold value to initiate the relative movement between head and grip, is adjustable.
申请公布号 DE4409425(A1) 申请公布日期 1995.09.21
申请号 DE19944409425 申请日期 1994.03.18
申请人 SIERSCH, WOLFGANG, 80686 MUENCHEN, DE 发明人 SIERSCH, WOLFGANG, 80686 MUENCHEN, DE
分类号 A63B59/00;A63B69/38;(IPC1-7):A63B69/38;G09B19/00 主分类号 A63B59/00
代理机构 代理人
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