发明名称 Portable wheel chair ramp
摘要 A wheel chair ramp comprises a plurality of leaves extending in the direction of intended use of the ramp. The leaves are joined together by flexible hinges so that the leaves may be folded to a stalked condition. The flexible hinges are formed by fabric straps attached to the sides of the leaves and passing between adjacent leaves.
申请公布号 US5671496(A) 申请公布日期 1997.09.30
申请号 US19950556796 申请日期 1995.11.02
申请人 SMITH, ALLAN 发明人 SMITH, ALLAN
分类号 E04F11/02;A61G1/04;A61G3/00;A61G3/06;A61G5/00;E04F11/00;E04G27/00;(IPC1-7):E01C5/00 主分类号 E04F11/02
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