Patent ID: 6397918
Filing Date: 2002-06-04
Classification: E06B

Abstract:
A Venetian blind comprising a head rail, a bottom rail, a plurality of slats located between said head rail and said bottom rail, a lift means controllable through a lift cord to lower or lift said blind while keeping said slats in a horizontal position, a tilt means including multiple tilters mounted in said head rail, and multiple ladder strings corresponding to said tilters, each of said ladder strings including a front and a rear vertical string and a plurality of transverse ladders spaced along and between said two vertical strings for adjusting tilt angles of said slats within 180 degrees, and a rotary shaft transversely extended across a top of said Venetian blind; said Venetian blind being characterized in that said front and said rear vertical sections of each of said ladder strings are upward extended by a predetermined length to provide front and rear hanging sections, respectively, without any of said transverse ladders spaced between said front and said rear hanging sections; upper or free ends of said front and said rear hanging sections of said ladder strings passing through said corresponding tilters in a predetermined manner and then fixedly connected to and wound around reels fixedly mounted on said rotary shaft, such that said front and said rear hanging sections can be synchronously released from or rewound around said reels; whereby by releasing a length of said front and said rear hanging sections from said reels, said upper slats are correspondingly lowered to a distance below said head rail before or after being deployed and a light transmissible area without being shielded by any of said slats is provided above said upper slats, and said upper slats located below the light transmissible area but not stacked on the bottom rail can still be deployed and tilted to adjust volume and direction of light projected through the blind.