发明名称 ARROWHEAD HAVING COLLAPSIBLE AND OUTWARDLY BIASED BLADES
摘要 A broadhead for an arrow has a ferrule and a pair of blade members. Each blade member has a first end that is pivotally interconnected with the ferrule body and an opposite second end. The blade members each have a retracted position and an extended position. A biasing member biases the blade members toward the extended positions and is the only element operable to hold the blade members in the extended position.
申请公布号 US2010004078(A1) 申请公布日期 2010.01.07
申请号 US20080168189 申请日期 2008.07.07
申请人 FLANAGAN EDWARD 发明人 FLANAGAN EDWARD
分类号 F42B6/08 主分类号 F42B6/08
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