| 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 |
US7155778(B2) |
申请公布日期 |
2007.01.02 |
| 申请号 |
US20050029074 |
申请日期 |
2005.01.04 |
| 申请人 |
AMESBURY GROUP, INC. |
发明人 |
NEWMAN GARY ROGER |
| 分类号 |
E05D13/00;E05D15/22;E05F1/00;E05F1/16 |
主分类号 |
E05D13/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
