Patent 8052120 was granted and assigned to Herkules Equipment Corporation on November, 2011 by the United States Patent and Trademark Office.
A vertical lift mechanism (100, 100a, 100b) including: a lift support assembly (102) comprising an upper frame member (104), a lower frame member (106), the upper frame member is movable between a lowered position and a lifted position. The lift support assembly additionally includes a support mechanism (150) that holds and maintains the alignment between the upper frame member and a lower frame member as well as a powering unit to cause movement of the upper frame.