发明名称 Platform attachment
摘要 A platform attachment is disclosed herein which comprises a pair of posts having cross members connecting therebetween. Extensions are secured to opposite sides of each post at the bottom end of the post to receive therebetween a ladder rung. A pair of arms is connected to each of the posts and the arms are pivotally connected thereto. Each of the pair of arms receives therebetween one of the ladder rails. A platform is mounted upon the pairs of arms and includes members which are received between each of the pairs of arms.
申请公布号 US4160493(A) 申请公布日期 1979.07.10
申请号 US19780866265 申请日期 1978.01.03
申请人 BRICE, ROBERT D. 发明人 BRICE, ROBERT D.
分类号 E06C7/16;(IPC1-7):E06C7/16;E04G1/30 主分类号 E06C7/16
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