Abstract: A vertically adjustable desk includes a support stand, a desktop with underbody and linkages of parallel links that connect the underbody to the support stand such that the desktop can be vertically adjusted above the support stand. A gas spring with handle connects each linkage with the underbody to assist in vertical movement of the desktop and, by use of the associated handle, to releasably lock the desktop in desired vertical positions.

Abstract: Mechanism for movably supporting a load, comprises a fixed frame, a pendulum lever pivotally connected at one end to the frame, and a link pivotally connected at one end to the other end of the pendulum lever. The other end of the link is connected to a vertically movable load support. A gas spring is pivotally interconnected between the frame and the link at points spaced from the points of articulation of the link and pendulum lever to the frame and to each other. Provision is made for adjusting the position of the pivotal connection between the link and the gas spring lengthwise of the link, and for adjusting the position of the pivotal connection of the gas spring to the frame in a direction toward or away from the point of articulation of the pendulum lever to the frame. Guides for the load are provided, comprising rollers mounted on the frame in between which a vertical member slides vertically.