发明名称 Removable step or shelf for ladder
摘要 A removable step for a ladder having a base member dimensioned to function as a seat or shelf, including an upward extending hanging member attachable at the upper end to a ladder rung, the lower end being pivoted to the base rearward edge, a downwardly extending support member having a lower end attachable to a ladder rung, the upper rung being pivoted to the base member forward edge, and a retaining bar having the rearward end attached to the base member lower rearward edge, the retaining bar extending underneath the base member and having two spaced apart indentures for removably engaging a ladder rung, the retaining bar serving to keep the base member forwardly pivoted so that it functions as a seat or shelf or rearwardly positioned so that it functions as a step.
申请公布号 US4211307(A) 申请公布日期 1980.07.08
申请号 US19790017349 申请日期 1979.03.05
申请人 ETHRIDGE, FRANK W 发明人 ETHRIDGE, FRANK W
分类号 E06C7/16;(IPC1-7):E06C7/16;E06C7/14 主分类号 E06C7/16
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