Patent ID: 7055572

Claim:
A window blind comprising: a headrail; a bottom rail spaced below said headrail; a plurality of fabric slats arranged between said headrail and said bottom rail, said fabric slats each having two stiff support rods respectively disposed at two opposite long sides thereof; and a plurality of ladder tapes connected between said headrail and said bottom rail and located respectively at the two opposite long sides of each said fabric slat, said ladder tapes each formed of a plurality of strands by weaving and having a plurality of through holes for the insertion of the support rods of said fabric slats to join said fabric slats to said ladder tapes between said headrail and said bottom rail, wherein the strands of each ladder tape form two longitudinal ropes, the two longitudinal ropes of each said ladder tape having at least one strand extended sideways from one longitudinal rope and linked to the strands of the other longitudinal rope.