发明名称 Method for producing a connecting tube interconnecting the shaft and the handle of a racket
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.
申请公布号 US5282913(A) 申请公布日期 1994.02.01
申请号 US19920945369 申请日期 1992.09.16
申请人 LO, KUN-NAN 发明人 LO, KUN-NAN
分类号 B29C70/30;B29C70/86;(IPC1-7):B65H81/00 主分类号 B29C70/30
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