Venetian blind for day/night use
US7028737B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 2004 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | May 12, 2024 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/2625
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A Venetian blind for day/night use includes a fixed upper beam attached at the top of a door/window, a movable beam disposed beneath the fixed upper beam, and a lower beam disposed at the bottommost thereof wherein a light-penetrable folding blind (slats) with cord passing holes disposed thereon is attached between the fixed upper beam and the movable beam thereof, and a sheltering folding blind (slats) with cord passing slots distributed thereon is located between the movable beam and the lower beam thereof. The fixed upper beam has three equally spaced cord passages arranged at the bottom side thereon in alignment with three through holes disposed at the upper surface of the movable beam thereon. A sheltering-blind pull cord unit and a light-penetrable-blind pull cord unit are respectively led through engaging holes with locating members mounted therein at both lateral sides of the fixed upper beam thereof and extend downwards till fixedly tied up to the movable beam and the lower beam respectively. Thus, the Venetian blind thereof is variably operated to display either the light-penetrable or sheltering blinds or both of them for day/night use to meet the need of a user accordin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.