Window blinding system with multiple shading effects

  • US 6,648,048 B2
  • Filed: 01/07/2002
  • Issued: 11/18/2003
  • Est. Priority Date: 01/07/2002
  • Status: Active Grant
First Claim
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1. A window blind system, comprising:

  • a top traverse supporter;

    a first shading arrangement downwardly extended from said top traverse supporter and comprising a first base member, a plurality of first slats, a first blind supporting system for spacedly supporting said first slats horizontally between said top traverse supporter and said first base member and controlling a tilt angle of each of said first slats, and a first operating system for selectively lifting up said first base member towards said top traverse supporter and lowering said first base member to drop downwardly away from said top traverse supporter;

    wherein said first blind supporting system comprises a traverse arm rotatably mounted on said top traverse supporter, two pairs of first and second supporting cords extended from two ends of said traverse arm to said first bottom member wherein said first slats are positioned between said first and second supporting cords, and a plurality of traverse cords spacedly extended between said first and second supporting cords for said first slats to rest on said traverse cords respectively;

    wherein said first operating system comprises a lift lock rotatably mounted on said top traverse supporter and a pair of lift cords each having a first end portion extended to said first bottom member, each of said two lift cords upwardly extending to penetrate through said first slats and then traversely extending through said top traverse supporter, wherein a second end portion of each of said lift cords is extended out of said top traverse supporter via said lift lock to control a rotation of said first shading arrangement;

    a second shading arrangement comprising a second base member, a plurality of second slats, and a second blind supporting system for spacedly supporting said second slats horizontally between said top traverse supporter and said second base member, and a second operation system for selectively lifting up said second base member towards said top traverse supporter and lowering said second base member to drop downwardly away from said top traverse supporter; and

    wherein said second blind supporting system is arranged to spacedly support said second slats horizontally between every two of said first slats and comprises a blind lock rotatably mounted on said top traverse supporter, two pairs of first and second supporting strings each having a lower end extended to said first bottom member, and a plurality of traverse braces spaced and extending between said first and second supporting strings for said second slats to rest on said traverse braces respectively, wherein said pairs of first and second supporting strings of said second blind supporting system are extended adjacent to said pairs of first and second supporting cords of said first blind supporting system in a side by side manner, each pair of said first and second supporting strings upwardly extends to two opposed sides of said first and second slats and then traversely extends through said top traverse supporter, wherein free end portions of said first and second supporting strings are extended out of said top traverse supporter via said blind lock to control a vertical displacement of each of said second slats, wherein each of said lift cords also upwardly extends to penetrate through said second slats to form said second operation system in such a manner that said first operation system is adapted to selectively lift and lower said first and second shading arrangements at the same time, wherein each of said second slats is horizontally suspended at a gap level defined at a middle of every two of said first slats wherein said gap level is formed by said traverse cord of said first blind supporting system such that a distance between every two of said first slats is double a height of said gap level.

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