Spring motor and drag brake for drive for coverings for architectural openings
US7740045B2 · kind B2 · utility
39Cited by
27References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2007 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Oct 22, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/80
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A spring motor and drag brake for use in coverings for architectural openings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.