发明授权
- 专利标题： Method for producing a connecting tube interconnecting the shaft and the handle of a racket
- 专利标题（中）： 用于制造将轴与手柄相互连接的连接管的方法
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申请号： US945369申请日： 1992-09-16
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公开(公告)号： US5282913A公开(公告)日： 1994-02-01
- 发明人: Kun-Nan Lo
- 申请人： Kun-Nan Lo
- 专利权人： Lo Kun Nan
- 当前专利权人： Lo Kun Nan
- 主分类号： B29C70/30
- IPC分类号： B29C70/30 ; B29C70/86 ; B65H81/00
摘要：
A method of producing a connecting tube that interconnects the shaft and the handle of a racket includes the steps of performing two foamed preforms which cooperatively form a foamed layer; placing the two foamed preforms around an internal impregnated fiber wall of the connecting tube; wrapping predetermined layers of impregnated fibers around the two preforms to form an external impregnated fiber wall; and heating the internal and external impregnated fiber walls and the preforms in a mold to allow the internal and external impregnated fiber walls and the preforms to connect integrally.
公开/授权文献
- US4714429A Arithmetic educational device 公开/授权日：1987-12-22
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