Patent ID: 8615970

Claim:
A panel assembly comprising: two fixed panels each having two spaced apart pivot holes, each fixed panel positioned on an opposite end of the panel assembly; a first overlying moveable panel having two spaced apart pivot holes; a second overlying moveable panel having two spaced apart pivot holes; two drive links with each drive link having one center pivot pin and two outer pivot pins; wherein the center pivot pin of each said drive link pivotally engages respectively the two pivot holes of each said fixed panel; wherein one of the outer pivot pins of each said drive link pivotally engages respectively the two pivot holes of one of said moveable panels; wherein the other of the outer pivot pins of each said drive link pivotally engages respectively the two pivot holes of the other of said moveable panels; and wherein rotation of the two drive links causes the two moveable panels to move relative to each other and to said fixed panels between a first aligned position and a second non-aligned position; and wherein the two drive links and respective pivot pins are arranged and constructed to define an effective radius of rotation for each of said moveable panels during rotation, said effective radii being approximately equal causing all said movable panels to move concentrically around said central pins at said radii of rotation.