Patent ID: 9222616
Filing Date: 2015-12-29
Classification: F16M

Abstract:
1. A counterbalancing lift mechanism for raising and lowering an electronic display, comprising: a support bracket configured to be coupled to a support member; a moving bracket configured to be coupled to an electronic display; a sliding mechanism coupled between the support bracket and the moving bracket, providing the moving bracket with a range of travel relative to the support bracket including a low position and a high position; a spring assembly mounted to the moving bracket, the spring assembly configured to generate a first force for countering a second force corresponding to a weight of the electronic display coupled to the moving bracket, the spring assembly having a first end coupled to the moving bracket and a second end that moves through a range of deflection as the moving bracket moves through the range of travel; a transition assembly configured to deflect the spring assembly a shorter length than the length of a corresponding movement of the moving bracket along the range of travel, wherein the transition assembly comprises a first transition pulley and a second transition pulley, the first and second transition pulleys being rotationally fixed relative to one another and configured to provide a first travel multiplier for transitioning between deflections of the spring assembly and corresponding movements of the moving bracket; a cam assembly comprising a cam and a wheel; and a plurality of cables operatively coupling the moving bracket to the support bracket in combination with the spring assembly, the transition assembly, and the cam assembly.