发明名称 Adjustable sports ramp system
摘要 The PRO-RAMP professional adjustable ramp system of this invention comprises a lower horizontal panel, hinged to a second angularly adjustable panel by a vertical plane. Two embodiments are disclosed. In the preferred embodiment the vertical member is adjusted by concentric tubular members and locking in position by a pair of pins through aligned holes. In the alternate embodiment the inside surfaces of the two panels are notched such that there is no possibility of slippage of the vertical pane and thus of accidental collapse of the plane. A variation of alternate embodiment employs a collapsible truss support instead of the vertical plane. The second horizontal plane may be sectionalized into plurality of planes such that a user can experience different gradients in a single ramp.
申请公布号 US6921339(B1) 申请公布日期 2005.07.26
申请号 US20020177507 申请日期 2002.06.24
申请人 MARTIN JAMES;CASINI ALBERT EDWARD 发明人 MARTIN JAMES;CASINI ALBERT EDWARD
分类号 A63C19/10;(IPC1-7):A63C19/10 主分类号 A63C19/10
代理机构 代理人
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