Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – Venetian blind type
Patent
1991-04-09
1993-01-05
Johnson, Blair M.
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
Venetian blind type
E06B 930
Patent
active
051761939
ABSTRACT:
A venetian blind (10) includes a headrail (11), a series of horizontal slats (12), a bottom rail (18) and lift cords (14) to raise and lower the slats and bottom rail, the slats each including spaced marquise shape apertures (22), called rout holes, through which a lift cord (14) passes. The spaced elliptical apertures are of less width and less length than the conventional rout holes heretofore employed. A substantial reduction of visible light through the apertures is achieved in the slats-tilted-closed position by a reduction of about 73% in the light-passing open space between the lift cord and the rout hole edges. The smaller size of the rout holes increases the structural rigidity and integrity of the remaining slat portions next to the rout holes and reduces the visual defect of the larger holes.
REFERENCES:
patent: 4739816 (1988-04-01), Dodich et al.
Johnson Blair M.
Levolor Corporation
LandOfFree
Venetian blind slat construction does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Venetian blind slat construction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Venetian blind slat construction will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2386493