发明名称 Marine safety ladder apparatus
摘要 A buoyant marine safety ladder apparatus includes a ladder that is pivotably mounted to a seawall or other support platform and is alternatable between a retracted condition, wherein the ladder is floating above the water, and a deployed or extended condition, wherein the lower end of the ladder extends into the water. A stop component restricts pivoting of the ladder such that it extends upwardly from the body of water at an angle of approximately 45° when in the extended condition.
申请公布号 US7017709(B1) 申请公布日期 2006.03.28
申请号 US20040771857 申请日期 2004.02.03
申请人 LAYMANCE RAYMOND N 发明人 LAYMANCE RAYMOND N.
分类号 E04G3/00;B63B17/00;E06C9/00 主分类号 E04G3/00
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