Abstract: The present invention discloses a window blind system, comprising a shading arrangement and an alternating hanging device vertically extended downwardly to support a plurality of slats in position, wherein a predetermined portion of the slats are both supported by the first shading arrangement and the alternating hanging device, so that by operating the alternating hanging device, the predetermined portion of the slats supported by the alternating hanging device are capable of being displaced with respect to the remaining slats thus creating a varying shading effect.

Abstract: A venetian blind includes a covering unit, and a cord-winding device. The covering unit includes a plurality of slats and two lifting cords. The cord-winding device includes a casing fixed on the headrail, a plurality of spring-surrounding members disposed rotatably within the casing, a plurality of co-rotatable gears sleeved respectively and fixedly on the spring-surrounding members, and a spiral spring disposed within one of the spring-surrounding members. The spiral spring is disposed within one of the spring-surrounding members, and has two ends fastened respectively to the casing and the one of the spring-surrounding members. Each of the lifting cords has two ends connected respectively to the bottom rail and a corresponding one of the spring-surrounding members. The spiral spring imparts a spring force to substantially balance the total weight of the bottom rail and the covering unit so as to maintain the bottom rail at any position.

Abstract: A motorized blind includes a headrail, a bottom rail, a drive shaft, an actuating device, and a power supply device. Thus, the battery of the power supply device is mounted in the bottom rail, so that the battery can be removed from the bottom rail easily and conveniently, thereby facilitating a user replacing or charging the battery of the power supply device when the electric power is not sufficient.

Abstract: A retractable blind assembly including a top section (3,103) with a vertically-extending blind covering material (23,123) extending between a fixed inclined head rail (5,105) and a middle rail (7,107) that is pivotable with respect to the head rail (5,105) about a pivot center that is adjacent to a lowermost end of the head rail, the head rail extending upwardly at an acute angle, the middle rail (7,107) being pivotable between a lower position, in which the middle rail extends horizontally, when the covering material is extended and an upper position, in which the middle rail extends upwardly at an acute angle and is adjacent the head rail, when the covering material is retracted, the covering material in the top section (3,103) having a generally triangular shape with an unattached short apex (13,113) about the pivot center and an opposite, unattached, long side (15,115) when the covering material is extended, a bottom section (9,109) with the covering material extending between the middle rail (7,107) and