发明名称 Composite racquet with double tube head frame
摘要 A sports racquet frame is built of a composite of laminations of fibrous material as impregnated by a thermosetting resin. The head section of the frame has an upper tube preferably disposed above the string bed plane and a lower tube preferably disposed below the string bed plane. A solid bridge of material integrally joins the upper tube to the lower tube. In a preferred embodiment the bridge is disposed radially exteriorly of the center line of the tubes, to maximize the length of string segments, which are strung to the bridge.
申请公布号 US2005266940(A1) 申请公布日期 2005.12.01
申请号 US20040854938 申请日期 2004.05.27
申请人 EF COMPOSITE TECHNOLOGIES, L.P. 发明人 FILIPPINI RAFAEL G.
分类号 A63B49/02;A63B49/10;A63B51/00;(IPC1-7):A63B49/10 主分类号 A63B49/02
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