Patent ID: 8079651

Claim:
An extension and retraction arrangement with a control system for adjusting a monitor from a retracted configuration to an extended configuration, the extension and retraction arrangement comprising: a trolley structure; a means for retaining a monitor to travel with the trolley structure; an elongate support arrangement with a first end, a second end, and a body portion between the first and second ends; a means for retaining the trolley structure for axial extension and retraction along the body portion of the elongate support arrangement from adjacent to the first end to adjacent to the second end of the elongate support arrangement; a means for propelling the trolley structure to travel along the body portion of the elongate support arrangement; a framework fixed adjacent to the second end of the elongate support arrangement wherein the framework has a centrally disposed aperture wherein the monitor projects through the aperture in the framework when the trolley structure is disposed adjacent to the second end of the elongate support arrangement; a door with an open position and a closed position for at least partially closing the aperture in the framework; a means for propelling the door between an open position and a closed position; a control system for controlling the extension and retraction of the trolley structure and an opening and closing of the door wherein the control system has an operation mode with an UP sequence and a DOWN sequence, wherein the extension and retraction arrangement has a storage configuration with the door in a closed position and the trolley structure and the monitor disposed below the door, and wherein the extension and refraction arrangement has a use configuration with the monitor extended beyond the door and the door in a closed position; and a means for enabling a user to induce the UP sequence and the DOWN sequence; wherein the UP sequence of the control system comprises adjusting the door to an open position, propelling the trolley structure and the monitor to an extended disposition with the monitor disposed beyond the aperture in the framework, and adjusting the door to a closed position to achieve the use configuration and wherein the DOWN sequence of the control system comprises adjusting the door to an open position, propelling the trolley structure and the monitor to a refracted disposition with the monitor disposed below the aperture in the framework, and adjusting the door to a closed position to achieve the storage configuration.