Venetian blinds
US5232037A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1992 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Jan 21, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/307
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A venetian blind in which there are at least two sets of slat supports each in the form of ladders, each set of ladder support comprising two or more ladders these ladders each having longitudinally spaced cross-rungs at the same location with one group of venetian blind slats being mounted on the cross-rungs of one of the ladders of each set and other slats being mounted on the other cross-rungs. In use, in an open position of the blind, the two or more slats at the safe location are superimposed on one another. The two or more ladders of each set are independently controllable to provide different visual effects in the closed position of the blind. In another construction used for a skylight, individual slats are mounted between depending double cross-rungs of the slat support ladders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.