发明名称 Method for making a baseball bat of composite material
摘要 A method for making a baseball bat includes the steps of preparing a solid bar made of silicone and having a tapered body with a first end and a second end provided with a diameter larger than that of the first end, wrapping a layer of composite fiber around the solid bar, placing the combination of the solid bar and the composite fiber layer into a mold, heating and pressurizing the combination of the solid bar and the composite fiber layer to expand the solid bar as well as the composite fiber layer, curing the combination of the solid bar and the composite fiber layer to allow the solid bar to return to its original dimension and removing the solid bar from the composite fiber layer and capping the composite fiber layer with a cover.
申请公布号 US2007132140(A1) 申请公布日期 2007.06.14
申请号 US20050297443 申请日期 2005.12.09
申请人 WU LI-TU L 发明人 WU LI-TU L.
分类号 B29C70/00 主分类号 B29C70/00
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