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1. 发明授权

US5092593A Visual aid and protective device for racquets 失效
标题翻译：视力援助和保护装置
公开(公告)号：US5092593A
公开(公告)日：1992-03-03
申请号：US663743
申请日：1991-03-04
申请人： Brian N. Williams , Robert N. Williams
发明人： Brian N. Williams , Robert N. Williams
IPC分类号： A63B49/14 , A63B69/38
CPC分类号： A63B49/14 , A63B69/38
摘要： A combination visual aid and protective device for use on the string end of a game racquet frame, the device being constructed of a thin, light-weight, brightly colored vinyl material that is predisposed to assume an arcuate shape that intimately conforms to the complex curved surface of the game racquet frame, in a manner to prevent the device from slipping relative to the frame.The device includes a plurality of stress relief holes that function to permit the device to conform to the racquet frame surface and to reduce its weight as much as possible.The visual aid and protective device is attached to the string end of the game racquet frame by a plurality of plastic coated wire-like attachment devices having generally rectangular cross-sections. These attachment devices engage corresponding, generally oval attachment holes in opposite attachment tabs of the protective device, in a manner to distribute the force (stress) of the attachment devices across more surface area of the holes in order to permit a tighter contact of the device with the racquet frame, without causing the attachment devices to tear through the tabs at the attachment holes.
摘要翻译：一种组合的视觉辅助装置和用于游戏球拍框架的弦线端的保护装置，该装置由薄的轻质的明亮的乙烯基材料构成，该乙烯基材料倾向于具有与复合曲面紧密相符的弓形形状游戏球拍框架的表面，以防止装置相对于框架滑动的方式。该装置包括多个应力消除孔，其用于允许装置与球拍框架表面一致并尽可能减小其重量。视觉辅助和保护装置通过具有大致矩形横截面的多个塑料涂覆的线状附接装置附接到游戏球拍框架的弦线端。这些附接装置以保护装置的相对的附接突片中的相应的，通常为椭圆形的附接孔的方式将附着装置的力（应力）分布在孔的更多表面区域上，以便允许装置更紧密地接触而不会使连接装置在连接孔处撕裂通过突出部。

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