Hardware and clutch mechanism for window treatment
US6981539B2 · kind B2 · utility
19Cited by
2References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 24, 2004 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Mar 24, 2024 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/323
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A window treatment support, such as a support for a cellular shade and other kinds of shades, includes a head rail, a clutch mounted on the head rail to support and operate a window treatment; and a cord engaging the clutch for selectively raising and lowering the window treatment. The clutch includes a pulley having a plurality of radial teeth defining a space sized to receive the cord. At least some of the teeth including a flexible projection forming an interference fit with the cord. The head rail is a bottom wall shaped to maximize the size of the clutch without substantially affecting the size of the head rail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.