| 发明名称 |
Block and tackle window balance with bottom guide roller |
| 摘要 |
Disclosed are apparatus for a block and tackle window balance to be incorporated in single and double hung window assemblies. In one embodiment the block and tackle window balance includes a roller secured within a bottom guide to increase range of travel of a window sash. |
| 申请公布号 |
US7353567(B2) |
申请公布日期 |
2008.04.08 |
| 申请号 |
US20060604517 |
申请日期 |
2006.11.27 |
| 申请人 |
AMESBURY GROUP, INC. |
发明人 |
NEWMAN GARY R. |
| 分类号 |
E05F1/10;E05D13/00;E05D15/22;E05F1/00;E05F1/16 |
主分类号 |
E05F1/10 |
| 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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