| 发明名称 | Fenestration covering lift system and method | ||
| 摘要 | A window covering for a fenestration product includes a top rail, a bottom rail, and a shade extending between the top rail and the bottom rail. A shade mechanism includes a rotatable lift shaft, a lift spool having a cylinder operably connected to the top rail for raising and lowering the top rail, and a resilient member operably connected between the lift shaft and the lift spool. The resilient member allows the lift shaft to over-rotate with respect to the lift spool. | ||
| 申请公布号 | US9222302(B2) | 申请公布日期 | 2015.12.29 |
| 申请号 | US201314141649 | 申请日期 | 2013.12.27 |
| 申请人 | Pella Corporation | 发明人 | Black Randy Lee |
| 分类号 | E06B9/303 | 主分类号 | E06B9/303 |
| 代理机构 | Faegre Baker Daniels LLP | 代理人 | Faegre Baker Daniels LLP |
| 主权项 | 1. A window covering for a fenestration product having a viewing area, the window covering comprising: a top rail; a bottom rail; a shade extending between the top rail and the bottom rail; and a shade mechanism comprising: a rotatable lift shaft;a lift spool having a cylinder operably connected to the top rail for raising and lowering the top rail; anda resilient member operably connected between the lift shaft and the lift spool, wherein the resilient member allows the lift shaft to over-rotate with respect to the lift spool. | ||
| 地址 | Pella IA US | ||