Closing devices incorporating rolling means
US5682937A · kind A · utility
35Cited by
1References
7Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 8, 1996 |
| Grant date | Nov 4, 1997 |
| Priority date | — |
| Expiry date | Apr 8, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/1588
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Closures such as rolling shades or blinds which include a drum for winding slats of the closure body and which are formed by two superposed shafts. Separation devices are provided adapted to prevent any friction between layers of slats wound on the shafts. These devices may include stepped pulleys associated with slat end pieces of different lengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.