US Patent 7487943 Dual arm mounting system with vertical adjustment feature

A dual arm articulating mounting system including a vertical adjustment feature. The vertical adjustment feature comprises a bracket that is secured to a rotation box and supports a bolt. The bolt goes through a support plate, with the support plate including at least two holes with bushings inserted therein. The bushings act as guides along smaller-diameter inside tubes while positioning the mount in the vertical position. A nut is threaded onto the bolt on the top side of the plate. As the nut is turned, the rotation box and the television or display device is raised or lowered under its own weight.