US Patent 7614438 Venetian blind

An improved Venetian blind type window covering having an open position and a closed position is provided. The window covering includes a plurality of panels suspended between a head rail and a bottom rail that provides a generally billowed appearance. A securement member and an adjustment member, in cooperation, are suitable for adjustably moving or tilting the plurality of blind panels to open and close the window covering. A tilting mechanism causes positional adjustment of the plurality of panels by raising and lowering at least the adjustment member.