Abstract: A display lifting device which is mounted within a ceiling plenum and is arranged for concealing a support framework, lifting arm and display within the ceiling area. A support arm for the display is pivotally mounted within the framework and is biased in the downward position and supported by a cable mounted on a cable drum drivingly connected to a reversible motor. The support arm comprises at least two telescoping sections with the cable connected to the end of the inner lower most section so that as the cable is extended the arm pivots downward with the telescoping sections extending through gravity to their fullest extent. In this way, the display can extend a considerable distance from the ceiling for viewing by the audience while in the retracted position a very small opening and space within the plenum is required for concealment. Mechanical stops and limit switches are provided at both extremes of the movement of the display and support arm to restrict the angular movement of the arm.

Abstract: A remote control, ceiling mounted lifting device is provided for concealing, supporting and providing floor level access to audio visual objects such as color video/data projectors. The overall height of the lifting device is extremely shallow to allow the device to be mounted and concealed within the ceiling clearance area. The device has an outer frame with an open inner section. A support carriage is provided which is sized to fit and nest with the open inner section of the support framework. The carriage has an inverted U-shaped structure which allows the projector to be recessed upwardly within the confines of the carriage. A scissor-like stabilizer mechanism is mounted on each side of the carriage and support structure. These stabilizer mechanisms are located on the outer edges of the device to minimize the overall height of the device.