发明名称 Musical instrument with a head tensioned over a shell by a rim using an axially oriented grain structure
摘要 A musical instrument comprising a shell and a rim for tensioning a head across an open end of the shell, for example a drum, is improved by forming one or both of the shell and the rim using a primary material having an axially oriented grain structure together with an auxiliary layer of secondary material having greater hoop strength than the primary material. The primary material can be a natural plant material, such as hardwood with the naturally occurring grain structure being oriented in an axial direction by assembling the annular rim using a stave construction. The secondary material can comprises a composite material including carbon fiber to reinforce the stave construction.
申请公布号 US8399754(B2) 申请公布日期 2013.03.19
申请号 US201213415932 申请日期 2012.03.09
申请人 KOKS BARRY DEAN 发明人 KOKS BARRY DEAN
分类号 G10D13/02 主分类号 G10D13/02
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