Methods and apparatus to provide upper and lower travel limits for covering of an architectural opening
US8662139B2 · kind B2 · utility
29Cited by
19References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2010 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Oct 19, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods and apparatus to provide upper and lower travel limits for architectural opening coverings are disclosed. A disclosed architectural opening covering assembly includes a rotatable roller tube and a covering mounted to the roller tube. The covering is movable between a lowered position and a raised position. The covering is wound on the roller tube in the raised position. The covering assembly further includes a first limit nut located internal to the roller tube to define the lowered position, and a second limit nut located internal to the roller tube to define the raised position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.