发明名称 Safety featured ladder scaffolding
摘要 A wall scaffold using a pair of ladders equipped with ladder jacks for supporting a horizontal work platform. The invention includes numerous safety features such as a safety railing on standards attached to the outboard ends of the ladder jacks, a paint bucket trolley for the railing, an adjustable anti-flexing brace between the central part of the ladder and the wall to prevent bouncing of the ladder and platform, a unique safety clamp for tightly securing components to the ladder rungs, a ladder level adjuster, an auxiliary step to assist in mounting and dismounting the work platform, and a safety stake attachable to the lowest ladder rung to prevent bottom "slip-out".
申请公布号 US4941547(A) 申请公布日期 1990.07.17
申请号 US19890411900 申请日期 1989.09.25
申请人 LIVICK, LESTER R. 发明人 LIVICK, LESTER R.
分类号 E06C7/16;E06C7/44;E06C7/48 主分类号 E06C7/16
代理机构 代理人
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