发明名称 Retractable access ramp
摘要 A retractable access ramp for improving the accessibility of a variety of commercial and other related structures. The retractable access ramp includes a housing that has a plurality of walls that define an interior space. The housing has an aperture through the housing. The aperture is for providing access to the interior space. The housing is adapted for being coupled to the steps such that a top wall of the housing is flush with a top surface of the steps. A base assembly is coupled in the interior space of the housing. The base assembly is selectively extendable from the housing. A ramp assembly is coupled to the base assembly. The ramp assembly is selectively extendable from the base assembly when the base assembly is extended from the housing. The ramp assembly is adapted for providing a smooth surface over the steps for wheeled vehicles.
申请公布号 US6484344(B1) 申请公布日期 2002.11.26
申请号 US20010928086 申请日期 2001.08.10
申请人 COOPER SIMON M. 发明人 COOPER SIMON M.
分类号 A61G3/06;B60P1/43;E04F11/00;(IPC1-7):E01D1/00 主分类号 A61G3/06
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