发明名称 Portable barge access ladder
摘要 The portable barge access ladder has a pair of coaming frame members positioned outside of a barge coaming with a plurality of safety treads there-between forming a coaming ladder portion. The ladder includes transverse frame members extending across the barge coaming with a decking tread member there-between forming a walkway for the operator to easily traverse the coaming. Angled hold frame members extend into the barge hold with conventional safety treads there-between at least partially forming a hold access ladder portion. The ladder includes adjustable legs slidably received in the hold frame members with one or more auxiliary treads attachable to the legs forming optional additional treads for the ladder as the legs are extended. The removable auxiliary treads will be used where the legs are extended beyond standard tread spacing. A combing securing mechanism is provided to prevent ladder lateral slippage during use.
申请公布号 US7637350(B2) 申请公布日期 2009.12.29
申请号 US20040852750 申请日期 2004.05.24
申请人 INTERSTATE EQUIPMENT CORPORATION 发明人 CONROY JEFFREY A.
分类号 E06C9/00;B63B27/14;B63B29/20;E06C5/04 主分类号 E06C9/00
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