Patent ID: 6763873
Filing Date: 2004-07-20
Classification: B27L,B27M,E06B

Abstract:
A slat for a window covering comprising:a first structure having a first surface opposing a second surface, a first end extending between said first and second surfaces opposite a second end extending between said first and second surfaces, a first side surface extending between said first and second surfaces and between said first and second ends, and a second side surface, oppositely disposed with respect to said first side surface, extending between said first and second surfaces and between said first and second ends, said first end having a first alternating series of protrusions and depressions; a fourth structure having a third surface opposing a fourth surface, a third end extending between said third and fourth surfaces opposite a fourth end extending between said third and fourth surfaces, a third side surface extending between said third and fourth surfaces and between said third and fourth ends, and a fourth side surface, oppositely disposed with respect to said third side surface, extending between said third and fourth surfaces and between said third and fourth ends, said third end having a second alternating series of protrusions and depressions, said first alternating series of protrusions and depressions complementary to and interfitted and attached with said second alternating series of protrusions and depressions, and wherein said first and said second set of alternating series of protrusions and depressions has an ideal ratio of a height of said protrusion and depression to a width of said protrusion and depression of about 2.75:1 to about 3.25:1.