发明申请
- 专利标题: Sports racquet with string port holes
- 专利标题(中): 运动球拍与弦孔孔
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申请号: US11584200申请日: 2006-10-20
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公开(公告)号: US20070135245A1公开(公告)日: 2007-06-14
- 发明人: Roberto Gazzara , Mauro Pinaffo , Michele Pozzobon , Mauro Pezzato
- 申请人: Roberto Gazzara , Mauro Pinaffo , Michele Pozzobon , Mauro Pezzato
- 优先权: EP05112160.6 20051214
- 主分类号: A63B49/02
- IPC分类号: A63B49/02 ; B32B37/00
摘要:
A sports racquet having a plurality of string port holes and conventional string holes is formed of a single tube of prepreg material. When molded, mold elements press opposed portions of the prepreg tube into contact with one another, and shape the adjoining prepreg material into a string port hole blanks. The portion of the pressed-together material which initially blocks the string port hole is removed after molding so that the string port holes extend through the frame. Alternatively, the mold elements cause the prepreg tube to follow a serpentine shape, thereby defining string port holes which are open alternately along the top and bottom surface of the frame. A pair of cover rings may be secured to the top and bottom racquet surfaces to cover the open sides of the string port holes.
公开/授权文献
- US07935286B2 Sports racquet with string port holes 公开/授权日:2011-05-03
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