Patent ID: 9591919
Date: 2017-03-14
CPC Classifications: A47B

Claim:
1. A height adjustable desk comprising: a work surface; and at least one leg assembly configured to attach to the work surface, the at least one leg assembly including a lift mechanism, the lift mechanism including: a second member moveable relative to the first member along a longitudinal axis; a third member moveable relative to the second member along the longitudinal axis; a synchronization assembly configured to balance movement between the first and second members with movement between the second and third members, wherein the synchronization assembly includes a first pulley wheel moveably coupled to the second member and located proximate a first end of the second member and a second pulley wheel moveably coupled to the second member and located proximate the second end of the second member; an energy storage member positioned in one of the first, second, and third members, the energy storage member having a first end coupled to one of the first, second, and third members and a second end connected to a first end of a tension member; a counterbalance mechanism configured to counteract a force exerted on the lift mechanism, the counterbalance mechanism positioned in one of the first, second, and third members and including: at least one pulley wheel, wherein the tension member is routed around the at least one pulley wheel, and wherein a second end of the tension member is attached to the second member.