发明名称 Spiral staircase kit
摘要 A spiral staircase kit has only a few different components, including a plurality of step members with step surfaces, donut-shaped end sections and lower support members. The steps are mounted in offset fashion, through a vertically standing support post. Spacer sleeves separate each of the steps, whose lower support members are positioned against the vertical surfaces of the sleeves to maintain the steps in place without the need for nails, bolts, or other connection components. Proper stacking of the sleeves and steps produces a sturdy and safe staircase structure which includes an upper landing member and which also can be interconnected with a handrail of choice.
申请公布号 US2007000191(A1) 申请公布日期 2007.01.04
申请号 US20050169548 申请日期 2005.06.29
申请人 ARNOLD HAROLD E 发明人 ARNOLD HAROLD E.
分类号 E04F11/00;E04F19/10 主分类号 E04F11/00
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