Elevator cab door drive system

An elevator cab door drive system comprising:

• a) a track fixed to the cab above a cab entrance opening, said track providing guidance for a cab door during its opening and closing movement cycles;
• b) a linear induction motor primary assembly, said primary assembly including a primary winding component which is fixed to the cab above said track;
• c) a hanger panel forming a fixed upper portion of the door;
• d) door guide rollers rotatably mounted on said hanger panel, said guide rollers being disposed for rolling movement over an upper surface of said track during opening and closing movement of the door;
• e) a linear induction motor secondary member mounted on said hanger panel, said secondary member passing through a flux field created by said primary assembly whereby a thrust force will be applied to said secondary member to drive said door through its opening and closing cycles;
• and
• f) a flexible joint connecting said door with said secondary member so as to prevent through plane deflections of said door from causing misalignment of said secondary member and said primary winding component, said flexible joint is formed by a hinge.