Patent ID: 7644538

Claim:
A closure, comprising: a movable quadrangular frame formed by four section bars each having a generally U-shaped longitudinal groove, said frame being selectively pivotable about one of a generally horizontal axis and a generally vertical axis, each of said longitudinal grooves comprising: a base, two parallel lateral walls and two ledges extending from distal ends of said walls towards each other, said ledges and said lateral walls defining a first undercut engagement area adjacent to a first face of the frame and a second undercut engagement area adjacent to a second face of the frame, and a drive assembly for controlling which of said axes the movable quadrangular frame will pivot about, said drive assembly comprising a plurality of movable actuating members and a plurality of movable transmission rods that operatively connect adjacent ones of said actuating members to each other, wherein each of said actuating members and each of said transmission rods has only one tenon, each of said tenons forming a one piece unitary element with a respective one of said transmission rods and said actuating members and wherein the tenons of all the actuating members and the tenons of all the transmission rods are disposed in said first undercut engagement area, and wherein all the actuating members and all the transmission rods each have a longitudinal projection opposite to a respective one of said tenons that bears on an outer side surface of a respective one of said ledges defining said second undercut engagement area, wherein each of said projections forming a one piece unitary element with a respective one of said transmission rods and said actuating members.