Patent ID: 7156142

Claim:
A partition wall, upwardly movable into storage position and downwardly movable into vertical, down position, the partition wall comprising: a) a plurality of trains of elongated members, the members of each train arranged to form a single pantograph forming longitudinally aligned rows of diamonds, the trains spaced laterally to form a wall plane and oriented so that the diamonds of the pantographs operate in a plane at a 90° angle to that wall plane; b) a plurality of panels, each panel secured to a pair of confronting members in adjacent trains, the panels secured to corresponding pairs of opposed sides of the diamonds; and c) means to raise and lower the trains at a substantially equal rate, the pantographs being contracted when the wall is in storage position and the pantographs being elongated when the wall is in down position; the panels aligning flushly to form a vertical wall having front and rear planar surfaces when the pantographs are elongated and the wall is in the down position, the similarly located members in adjacent trains being in end-to-end vertical alignment when the wall is in the dwon position.