发明名称 |
Fiberglass extension ladder |
摘要 |
An extension ladder comprised of a pair of base rails interlocked in a tongue and groove relationship with a pair of slide rails is disclosed. The rails may be manufactured in a variety of shapes including "I" beams, rectangles, boxes, or even ovals or circular shapes. Some embodiments of the ladder include a pulley assembly which is fastened to a fly rail rung and a rope is passed through the pulley to form a continuous loop around the rungs of the base set of rail rungs and the fly fail rungs. In addition, some embodiments include means for attaching tools to the fly rail. |
申请公布号 |
AU1490701(A) |
申请公布日期 |
2001.05.30 |
申请号 |
AU20010014907 |
申请日期 |
2000.11.15 |
申请人 |
FIBERLITE TECHNOLOGIES, INC. |
发明人 |
RONALD R. GRIMES;KELLY E. RASMUSSEN;JACK W. SEVERSON;WILLIAM R. ISHAM |
分类号 |
E06C1/12;E06C7/06;E06C7/08;E06C7/14 |
主分类号 |
E06C1/12 |
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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