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Venetian blind with variable tilting
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a technology of venetian blinds and tilting, applied in the field of venetian blinds, can solve the problems of general complex manufacture and use of venetian blinds
Inactive Publication Date: 2012-06-19
HUNTER DOUGLAS IND BV
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Summary
Abstract
Description
Claims
Application Information
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Problems solved by technology
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Benefits of technology
The invention is a venetian blind with slats that can be tilted to adjust their angle. It includes a mechanism for moving the slats in opposite directions, a ladder system for supporting the slats, and an auxiliary tilt cord that engages with a member of the ladder system. The blind also has guiding loops along the ladder for easy assembly and operation. The invention makes the blind easier to assemble and operate and can also be made less expensively.
Problems solved by technology
Although such a blind has been reasonably successful in providing a room with both privacy and some sunlight, the blind has generally been rather complicated to manufacture and use.
Method used
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first embodiment
[0027]FIGS. 1-5 show a venetian blind 1 of this invention. As best seen in FIG. 1, the blind 1 has a generally conventional, horizontallyextending head rail 3, horizontally-extending bottom rail (not shown) and pair of vertically-extending slat-supporting ladders 5 and 7. The ladders 5, 7 are suspended from the head rail 3 in a conventional manner so as to be movable by a pair of tilt pivot swivels 9 and 11, respectively, in the head rail. As will be described in detail below with reference to FIGS. 2, 3 and 5, the ladders 5, 7 hold a plurality of conventional horizontally-elongated slats 13, so that they are suspended horizontally from the head rail 3. A conventional, manually operable, cord loop 8 is suspended from the front of the head rail 3. The cord loop 8 is connected to the tilt swivels 9, 11 in the head rail 3. The tilt swivels 9, 11 can move the front and rear of the ladders 5, 7, relative to each other, to adjust the angular position or tilt of all the slats 13 (i.e., piv...
second embodiment
[0048]FIG. 6 shows a blind 101 of the invention which is similar to the blind 1 of FIGS. 1-5 and for which corresponding reference numerals (greater by 100) are used below for describing the same parts or corresponding parts.
[0049]As shown in FIG. 6, the blind 101 includes: a horizontally-extending head rail 103; a horizontally-extending bottom rail 104; a pair of vertically-extending ladders 105, 107 (not visible in FIG. 6), each having a rear vertical member 117, 119 (not visible in FIG. 6) and a front vertical member 118, 120 (not visible in FIG. 6) and a plurality of cross-rungs 129 between its rear and front, vertical members; and a plurality of slats 113 suspended from the head rail on the cross-rungs. A conventional rod-operated tilter 108, attached to compatible gearing (not shown) in the head rail 103, replaces the cord loop 8 and worm gearing 35 of the blind 1 of FIGS. 1-5. In this regard, a suitable filter and compatible gearing are described in, for example, WO 98 / 27307,...
third embodiment
[0055]FIG. 7 shows a blind 201 of the invention which is similar to the blind 101 of FIG. 6 and for which corresponding reference numerals (greater by 100) are used below for describing the same parts or corresponding parts.
[0056]As shown in FIG. 7, the blind 201 includes: a horizontally-extending head rail 203; a horizontally-extending bottom rail 204; a pair of vertically-extending ladders 205, 207 (not visible in FIG. 7), each having a rear vertical member 217, 219 (not visible in FIG. 7) and a front vertical member 218, 220 (not visible in FIG. 7) and a plurality of cross-rungs 229 between its rear and front, vertical members; a plurality of slats 213 suspended from the head rail on the cross-rungs; and rod-operated tilter 208, attached to compatible gearing (not shown) in the head rail 203.
[0057]The blind 201 of FIG. 7 features a plurality of vertically-aligned tubular elements 230 about each of the rear vertical members 217, 219 of the ladders 205, 207. Each tubular element 23...
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Abstract
A venetian blind including vertically-extending slat-supporting ladders is described. Each ladder comprises (i) first and second vertical members connected by cross-rungs, (ii) slats, each slat being supported on a cross rung of each ladder, (iii) an adjusting mechanism for pivoting the slats about their longitudinal axes by moving the vertical members in opposite directions, (iv) a vertically-extending auxiliary tilt cord that is adjacent to the first vertical member, and (v) an engagement mechanism on the auxiliary tilt cord and the first vertical member for moving the first vertical member at an intermediate location along its length upwardly with upward movement of the auxiliary tilt cord to adjust the angular pivot of a section of the cross-rungs connected to the first vertical member above or below the intermediate location. The engagement mechanism including (a) a guiding loop on the first vertical member, (b) a bead fixed on the auxiliary tilt cord and vertically spaced away from the guiding loop and (c) an engaging collar slidably positioned on the auxiliary tilt cord between the guiding loop and the bead, the auxiliary tilt cord extending through the guiding loop. The bead is adapted to engage the engaging collar and move the engaging collar toward the guiding loop to engage the guiding loop when the auxiliary tilt cord is moved upwardly. The blind including a winding drum for winding the auxiliary tilt cord and moving the cord upwardly after the adjusting mechanism has moved the first and second vertical members in opposite directions.
Description
BACKGROUND OF INVENTION[0001]1. Field of the Invention[0002]This invention relates to a venetian blind, the slats of which can be tilted to different angles relative to one another (i.e., variably tilted). When the slats of such a blind have been tilted, so that they are closed in a normal fashion, the slats of a lower portion of the blind, in front of a room window, can be tilted to an open position to provide a view of the outside, while at the same time, the slats of the blind's upper portion can be left tilted in a closed position to reduce the amount of sunlight coming into the room. Alternatively, an upper portion of the blind can be tilted to an open position to admit some sunlight into the room, while at the same time, the slats of the blind's lower portion can be left tilted in a closed position to provide privacy in the room and / or reduce the amount of sunlight in the room, for example to prevent glare from interfering with the use of computer or television screens in the ...
Claims
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Application Information
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Patent Type & Authority Patents(United States)
IPC IPC(8): E06B9/26E06B9/306E06B9/307
CPCE06B9/307E06B2009/285
Inventor DEKKER, NICOLAASHORSTEN, ANTONIUS JOHANNES JOSEPHUS
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