发明名称 Laterally extensible ladder
摘要 A laterally extensible ladder comprises first and second uprights having a plurality of adjacent rung assemblies mounted therebetween. Each rung assembly includes a first hollow rung element that defines a rung axis and a second rung element received in the first rung element. The second rung element is movable along the rung axis for adjusting the length of the rung assembly, hence adjusting the width of the ladder. At least one rung assembly includes a structure for releasably holding the rung assemblies at a selected width configuration.
申请公布号 AU2808801(A) 申请公布日期 2001.04.10
申请号 AU20010028088 申请日期 2000.07.18
申请人 WILLIAM V. ROONEY;JULIE M. ROONEY 发明人 WILLIAM V. ROONEY;JULIE M. ROONEY
分类号 E06C1/38 主分类号 E06C1/38
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