Abstract: A slat for use in a window frame having opposing walls may include a wing portion structured to block light, the wing portion having a first end in a longitudinal direction and a second end opposite to the first end; and a first pressure contact part provided at the first end and a second pressure contact portion provided at the second end, the first pressure contact part and the second pressure contact part being structured to press the wing portion against the opposing walls of the window frame to thereby hold the wing portion in place.

Abstract: A motorized venetian blind system for covering a window of a space comprising a blind drive unit having two motors to provide for independent control of a position of a bottom rail and a tilt angle of a plurality of slats of the blind system. The blind drive unit is operable to adjust the position of the bottom rail to a preset position, and to adjust the tilt angle of the slats to a preset angle in response to receiving a single digital message (e.g., a preset command). The blind drive unit is operable to automatically adjust the position of the bottom rail and the tilt angle of the slats to limit a direct sunlight penetration distance in the space to a maximum direct sunlight penetration distance, and to maximum a reflected sunlight penetration distance on a ceiling of the space, while minimizing occupant distractions.

Abstract: The present invention relates to a louvre vane system with a frame, which houses a plurality of vanes within the frame. The vanes can be rotated between an open position, in which the edges of adjacent vanes are spaced apart and a closed position, in which the edges of adjacent vanes abut each other to for:: a substantially continuous surface. When the vanes are in the closed position, a thermal membrane, is formed by the, vanes 14 that prevents drafts and limits heat exchange from one side of the membrane to the other.

Abstract: The invention relates to a self-locking coupling element between shutter slats, which has been designed to lock the shutter and prevent same from being opened from the exterior. The ends of the coupling element can be inserted into the ends of the slats. The sides of the slats and of the coupling element can be positioned inside a side shutter guide, such that, when an attempt is made to lift the shutter, the upper and lower ends of the coupling element can rotate in relation to the ends of the slats and become locked in the guides, preventing the shutter from being lifted. The invention is characterized in that the coupling element includes a locking projection which becomes locked in the side guide when an attempt is made to lift the shutter, thereby preventing same. In addition, the invention also includes a coupling end that can be engaged in the adjacent slat.

Abstract: A window shade detention member universally installable on a sliding flute of a upper beam to provide positioning and chained movement for window shades includes a first action side and a second action side. The first action side is located on a transverse side of a detention member and has side boards extended upwards and inwards from two sides of a base board to form a first trough and a second trough that form a transverse clipping trough which clips side wings of the sliding flute of the upper beam. The first action side also provides bucking for the chained movement of the window shades. The second action side is located on a longitudinal side of the detention member and has a third trough and a fourth trough on two ends of the connection junctures of the base board and side boards to form a longitudinal clipping trough. The longitudinal clipping trough clips the side wings of the sliding flute of the upper beam.

Abstract: The present invention is an adjusting mechanism for a controlling switch which comprises a transmission mechanism. The gear of the transmission mechanism is meshed with a driving gear and a worm is driven via an inner gear. The worm is further meshed with a driven gear of the adjusting mechanism. The driven gear is provided with clutching plates at both sides. A stopping block biased by a resilient spring plate is disposed adjacent to the clutching plate such that the clutching plate is pressed against the driven gear and is rotated together with the driven gear. The clutching plate is provided with a coil spring externally and centrally. The resilient spring plate is further provided with a triggering rod such that the clutching plate can be removed from the driven gear. On the other hand, the clutching plate can be also moved back to its original position by the coil spring such that the stopping block will press onto a rocker arm and the switch will be triggered off.

Abstract: A window guard for a venetian blind hung window consisting of oppositely disposed sleeves, the sleeves being adapted to be affixed to opposite ends of a window frame, each sleeve containing a rotator extending substantially the length of the sleeve to form an assemblage, each sleeve and rotator being slotted along their lengths, said slots permitting the slats of a venetian blind to extend within the assemblages and move reciprocally and pivotably therein, each rotator having a series of equally spaced extensions which, upon selective rotation of the rotator, prevents reciprocable and/or pivotable movement of the blind.

Abstract: A venetian blind includes a plurality of slats, rotating means for rotating the slats from a first closed setting through a plurality of open settings to a second closed setting, and indicating means for indicating when the rotating means has rotated the slats to one of a plurality of predetermined desired settings, including at least one open setting. In preferred embodiments of the invention, the means for indicating includes a cam that rotates as the tilt rod is rotated. The cam has a substantially annular perimeter with a number of detents at predetermined locations corresponding to the predetermined desired settings of the slats. A spring clip is biased toward the perimeter of the cam such that a portion of the spring clip travels along the perimeter of the cam when the cam is rotated and engages a detent when it becomes aligned with the detent.

Abstract: A vertical blind of the type having louver carriages mounted for movement along a guide channel with a louver carrier mounted on each carriage for rotation about an upright axis and carriage gear mechanism for rotating the louvers in response to turning of an operating shaft that extends lengthwise of the channel. A wand operated mechanism is provided for rotating the louvers in response to raising and lowering a wand and includes a drive lever mounted for pivotal movement about an axis parallel to the axis of the operating shaft and a crank lever rotatable with the shaft and operated by the drive lever to rotate the shaft. A bidirectional detent mechanism on the housing and crank lever releasably retains the shaft in different angularly adjusted positions. The wand includes a tubular member connected to the drive lever through an L-shaped connector so that tubular member extends downwardly from the underside of the channel in all operating positions fo the drive lever.

Abstract: This invention relates to a locking device for a raisable or liftable venetian blind in which the bottom rail of the venetian blind includes an end piece extending into and guided by the side housing of the blind and in which a flexible lifting member engages the end piece of the bottom rail to raise and lower the same. A spring urged pivoted latch is provided within the lower portion of the housing which automatically engages over the end piece of the bottom rail when it is in the lowered position and the tension in the lifting member is relaxed. Thus the blind is locked in the down position. When tension is applied to the lifting member to lift the blind, the lifting member moves the latch out of locking engagement with the end piece permitting the blind to be raised.