Vertical venetian blind construction
US4122884A · kind A · utility
53Cited by
3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1977 |
| Grant date | Oct 31, 1978 |
| Priority date | — |
| Expiry date | Jan 24, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S160/90
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A vertical venetian blind construction in which carriages having rotatable slat carriers are mounted for movement along a horizontal channel by traverse cords that extend lengthwise of the channel. A spline shaft extends lengthwise of the channel and the carriages have gears that mesh with the spline shaft for rotating the slat carriers in response to the turning of the shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.