Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – Roll type
Patent
1994-08-03
1996-10-22
Johnson, Blair
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
Roll type
160201, 49 861, E06B 908
Patent
active
055667376
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention.
The invention relates to a roller blind with louverable, lamellar blind slats, which in their upper areas are connected in a hinged manner with elements of a pull chain connected with one another in a hinged manner and in their lower areas with elements of an adjusting chain connected with one another in a hinged manner and are guided laterally in stationary guide profiles, in which the connecting pins of the adjusting chain elements with the blind slats are at a distance from the plane in which the hinge pins of the adjusting chain elements lie.
2. Description of the Related Art.
Such a roller blind is known, for example, from EP-A 382 172. In such roller blinds, it is desirable that, on the one hand, they can be rolled up in the roller housings problem-free and in as space-saving a manner as possible and that, on the other hand, the replacement of non-louverable roller blinds already present in buildings by louverable roller blinds is possible without great changes. In other words, the existing guideways must neither be moved nor replaced by others with larger dimensions. In addition, such roller blinds should consist of as few individual parts as possible and should be able to be produced economically.
The roller blind known from EP-A 382 172 exhibits two disadvantages in this respect. In the first place, it is necessary that the guide profiles must be at a certain distance from the window or door frames or the like, since the blind slats when louvered are not only swiveled outward but also project inward over the guide profiles to a certain extent, which is connected with the special arrangement of the pivot bearings of the blind slats. In the second place, the roller blind according to EP-A 382 172 consists of relatively many individual parts, which has a disadvantageous effect on the production costs.
SUMMARY OF THE INVENTION
The object of the invention is therefore, on the one hand, to make available a roller blind which does not exhibit any parts that can be moved inward, i.e., toward a window or a door or the like, and which, on the other hand, can be produced simply and economically. In this case, the roller blind should be able to be rolled up in the roller housing problem-free and with as small a space requirement as possible.
This object according to the invention is achieved in that the pins of the hinges, by which the pull chain elements and the adjusting chain elements are connected with one another, and the swivel pins of the blind slats in the non-louvered state of the roller blind are aligned with one another.
Because the swivel pins of the blind slats are aligned with the hinge pins of the pull chain elements and the adjusting chain elements and can be moved on the upper edge of the blind slats, the upper area of the blind slats is no longer swiveled inward when the latter are louvered. Another advantage, which is produced by the invention, is that the blind slats can be swiveled by the alignment of the pins in the non-louvered state of the roller blind together with the pull chain elements and adjusting chain elements assigned to them and consequently can be rolled up in the roller housings in a very space-saving manner and problem-free. Another advantage is that a single bearing pin, i.e., a single bearing bolt, can be used for the swivel pins of the blind slats on the pull chain elements and the connecting hinge of two adjacent pull chain elements, by which both the number of components of the roller blind and its production costs can be reduced.
Because the connecting pins of the adjusting chain elements with the blind slats are at a distance from the plane in which the hinge pins of the connecting elements lie, a lever action on the blind slats results, so that the latter can be louvered without problems and additional devices, when the adjusting chain is held or operated by a suitable device.
A preferred embodiment of the invention is characterized in that grooves running crosswise to the longitudinal axis of the blind sla
REFERENCES:
patent: 3302692 (1967-02-01), Gray
patent: 3989084 (1976-11-01), Inamura et al.
Erber Andreas
Johnson Blair
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