发明名称 |
Collapsible ladder |
摘要 |
A collapsible ladder which includes a plurality of platforms suspended from several rope segments. The rope segments are placed in open-ended notches disposed in the platforms and are clamped thereto by a plurality of clamp means, the clamp means being divided in half, each half engaging one notch and the rope therein and being clamped by an elongated fastener to the other half of the clamp means which engages another notch and the rope therein. As a result of this configuration, the elongated platforms, if damaged, can be changed individually without necessity of removal of other than the damaged platform.
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申请公布号 |
US4442920(A) |
申请公布日期 |
1984.04.17 |
申请号 |
US19820430593 |
申请日期 |
1982.09.30 |
申请人 |
STEELSTRAN INDUSTRIES, INCORPORATED |
发明人 |
GRONBECK, PETER W.;MULLANEY, DENNIS;SMITH, KIMBERLY M. |
分类号 |
E06C1/56;(IPC1-7):E06C1/56 |
主分类号 |
E06C1/56 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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