Patent ID: 7040457

Claim:
An elevator door comprising at least one door panel operatively connected to a motor through a linkage that positions the door panel when the motor operates, the door panel motor having a control controlling motor operation, the control comprising a door panel sensor having a fixed end and a movable end that generates a signal as a relative position of the fixed and movable ends is changed, one of the door panel sensor fixed end and the movable end being directly coupled to a frame of the door panel and the other of the door panel fixed end and the movable end being directly coupled to the door panel such that the sensor senses a linear position of the door panel as the door panel is moved, the control operating the door panel motor based upon the door panel position sensed by the sensor; and further comprising a gate adjacent the door panel, the gate being operatively connected to a gate motor through a sprocket and a gate non-extendible linkage that positions the gate when the gate motor operates, the control comprising a gate sensor operatively connected to the gate motor and sensing rotary displacement of the sprocket and generating an electrical signal corresponding thereto, the control operating the gate motor to position the gate between open and closed positions based upon the gate sensor signal.