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2. 发明授权

US07442867B1 Drum 失效
标题翻译：鼓
公开(公告)号：US07442867B1
公开(公告)日：2008-10-28
申请号：US11808016
申请日：2007-06-06
申请人： James E. Hunter
发明人： James E. Hunter
IPC分类号： G10D13/02
CPC分类号： G10D13/02 , G10D13/023
摘要： A drum having hidden, drum head tensioning features. The drum features a drum head assembly being positioned within a drum body. The drum head assembly includes a mounting frame having a mounting ring being loosely fitted within the drum body. A number of mounting brackets are affixed at spaced apart locations to the interior of the mounting ring. A number of first threaded fasteners are threadably engaged with the mounting ring and extend radially outward therefrom so as to selectively press against, and grip, the drum body. A number of second threaded fasteners extend upwardly from the mounting brackets. A drum head is positioned upon the mounting frame so as to cover the top of the mounting ring and to extend downwardly between the mounting ring and the drum body. A retaining band clamps the drum head against the mounting ring. The retaining band has an elongated strip extending snugly over the drum head and extending around the bottom of the mounting ring. The retaining band also has opposed ends that are turned inwardly so as to form a pair of spaced-apart fins that extend through the notch in the mounting frame. A third threaded fastener connects the fins for selectively drawing the fins toward one another and varying the tightness of the band around the mounting ring and drum head. A tensioning ring is slidably positioned within the top of the mounting ring and is positioned atop the second threaded fasteners whereby tightening the second threaded fasteners selectively raises the tensioning ring to tighten the drum head.
摘要翻译：鼓具有隐藏的鼓头张紧特征。鼓的特征在于鼓头组件定位在鼓体内。鼓头组件包括安装框架，该安装框架具有松散地装配在滚筒主体内的安装环。许多安装支架固定在安装环的内部的间隔开的位置。许多第一螺纹紧固件与安装环螺纹连接并从其径向向外延伸，以便选择性地压靠和夹紧滚筒本体。许多第二螺纹紧固件从安装支架向上延伸。鼓头位于安装框架上，以便覆盖安装环的顶部并且在安装环和鼓体之间向下延伸。保持带将鼓头夹在安装环上。保持带具有细长带，其细长条紧贴地延伸在鼓头上并围绕安装环的底部延伸。保持带还具有向内转动的相对端，以便形成延伸穿过安装框架中的凹口的一对间隔开的翅片。第三螺纹紧固件连接翅片，用于选择性地将翼片朝向彼此拉伸，并改变围绕安装环和鼓头的带的紧密度。张紧环可滑动地定位在安装环的顶部内并且被定位在第二螺纹紧固件的顶部，由此紧固第二螺纹紧固件选择性地升高张紧环以收紧鼓头。

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