发明名称 |
Roller assembly for a ladder |
摘要 |
An aerial ladder roller assembly to improve the function of the ladder during extension and retraction of sections of a multiple-section aerial ladder. One embodiment has a plurality of aligned apertures for rotatably mounting and a roller that is rotatably mounted in a housing. The housing has a roller pad and an aperture through which a roller extends. The housing is adapted for pivotal mounting at a point approximately central to the length of the axis. A roller is rotatably mounted in the housing on each side of the pivotal mounting point. A pair of rollers is rotatably mounted in the housing on each side of the pivotal mounting point. Also provided is a multiple-section ladder, having at least two nested sections with a housing having at least one roller is rotatably and pivotally mounted extending through an aperture. The slide plate of the second section juxtaposes the roller assembly.
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申请公布号 |
US2005247524(A1) |
申请公布日期 |
2005.11.10 |
申请号 |
US20040828769 |
申请日期 |
2004.04.21 |
申请人 |
WISSLER REID L;LONGENECKER JASON L;SALMI JAMES A |
发明人 |
WISSLER REID L.;LONGENECKER JASON L.;SALMI JAMES A. |
分类号 |
E04C1/00;E06C5/04;F16C29/04;(IPC1-7):E04C1/00 |
主分类号 |
E04C1/00 |
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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