发明名称 Silent dart board
摘要 A dart board includes a backing plate with a frame connected thereto and a plurality of ribs on the frame so as to define a plurality of partitions in which a plurality of blocks are movably received respectively. Each block has flexible convex portions which contact an inside of the ribs defining the partition when the block is hit by darts. A plurality of spring members are connected between the backing plate and the blocks so as to bounce the blocks back after the impact disappears.
申请公布号 US6659465(B2) 申请公布日期 2003.12.09
申请号 US20020120997 申请日期 2002.04.12
申请人 YIU CHIN-HAO 发明人 YIU CHIN-HAO
分类号 F41J3/00;(IPC1-7):F41J5/04 主分类号 F41J3/00
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