Patent ID: 8228668
Filing Date: 2012-07-24
Classification: F16M

Abstract:
1. A method of changing a position of a display, comprising engaging a display and applying a force to the display, the display being operatively coupled to a lift system comprising a first pulley having an axis of rotation, a biasing member having a biasing member force dependent upon its length, a centerline, and a first portion operatively coupled to the first pulley, a first radius extending between the centerline of the biasing member and the axis of rotation, the first radius continuously changing when the first pulley rotates and the first radius having a value of zero when the biasing member force is at a maximum to create a constant moment output, and a first tension member having a first portion operatively coupled to the first pulley, the constant moment output providing a constant force to the first tension member during a defined angle of rotation of the first pulley.