发明名称 Collapsible athletic training ladder
摘要 A collapsible ladder for use primarily for athletic training and the like has a plurality of spaced-apart, substantially rigid rungs secured with collapsible connectors to a plurality of spaced-apart, substantially rigid spacers extending therebetween. In one disclosed embodiment, the collapsible connectors are strips of flexible material extending between the rungs and spacers. Another disclosed embodiment has a second set of rungs aligned substantially parallel to the plurality of spaced-apart rungs along a common central set of spacers. The collapsible connectors allow the ladder to be quickly and easily transitioned between an extended, operational position, and a collapsed, storage position.
申请公布号 US7874959(B2) 申请公布日期 2011.01.25
申请号 US20070714716 申请日期 2007.03.05
申请人 NIKE, INC. 发明人 DIETER WILLIAM
分类号 A63B5/22 主分类号 A63B5/22
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