Patent ID: 8776860

Claim:
A vertical window covering, comprising: a head rail having a plurality of openings which extend to a bottom of the head rail; a plurality of vane carriers, each of which has a front wall, a rear wall, and a head connected to top ends of the front wall and the rear wall, wherein a clip slot is formed between the front wall and the rear wall, a hook is provided on the rear wall and in the clip slot, and the head is provided with a locker; a hook, which is provided on the rear wall and is in the clip slot, having a slot and a slot bottom, wherein the slot bottom has a curved surface; a plurality of vanes, each of which has a bore to engage the hook of the vane carrier; wherein the curved surface of the hook is complementary to at least a portion of an edge of the bore of each of the plurality of vanes hung on the hook and wherein the slot bottom has a middle portion and two curved portions downward at opposite sides of the middle portion; wherein the middle portion and each one of the two curved portions are directly connected to the rear wall; and wherein the head and the locker of the vane carrier is inserted into one of the opening of the head rail for rotation, and the vane carrier is turned between a lock position, in which the locker leaves the opening to couple the vane carrier to the head rail, and an unlock position, in which the locker is moved to the opening to disengage the head of the vane carrier with the opening of the head rail, and wherein at least one of the front wall and the rear wall is provided with two curved corners for engaging a vane having an arched cross section.