Patent ID: 6953075

Claim:
A Venetian blind comprising: a headrail; a bottom rail; a plurality of slats; a blind supporting system suspended from the headrail and supporting said slats horizontally and spaced apart between said headrail and said bottom rail; a lift cord having a first end fixed to said bottom rail and a second end extending upwardly through said slats into said headrail and then downwardly through a gate of a lift lock mounted in said headrail and terminating in an operation segment suspended below said headrail for a distance; and wherein a knot is formed by holding up a middle part of the suspended operation segment of said lift cord to form a base strand having a U-turn tip, and then detouring said U turn tip and turning U-turn tip round said base strand through at least one turn to form an eye, and then inserting said U-turn tip through said eye at least once and then stretching said U-turn tip tightly; wherein the knot constructed in said lift cord has a dimension greater than a gate of said lift lock.