Abstract: An adjustable support arm utilizing a spring having a dynamic attachment point to support the weight of an attached object. The adjustable support arm can comprise a lower bracket connected to an upper bracket by a parallelogram linkage. A spring is utilized to counterbalance the weight of an attached object. The first end of the spring can be attached to the upper link of the parallelogram linkage. The second end of the spring is attached to a drag link to provide a dynamic attachment point that automatically adjusts as the support arm is moved between the upper and lower vertical positions. Either a pivot link or a slot in the lower link can be used to guide the drag link's movement as the support arm's vertical height is adjusted.

Abstract: An adjustable laptop holder having an adjustable tray so as to allow a user to adjust the height of a laptop screen. The adjustable laptop can comprise a base, a shaft, a tray, a friction pack, and a clutch bearing. The friction pack attaches the shaft to the base. The clutch bearing has an inner race coupled to the shaft and an outer race which engages the tray. The adjustable laptop holder having features of the present invention allows a user to freely rotate the tray into the open position yet resists returning to the closed position, effectively locking the laptop holder in the desired position.

Abstract: An adjustable display arm utilizing a single motion, friction-locking hinge mechanism to allow a user to adjust the display height across a range sufficient to accommodate different-sized users while supporting the weight of an attached flat-panel display. The adjustable display arm can comprise a base assembly, an arm assembly, and a mount assembly. The arm assembly can have a lower arm bracket, an upper link, a hinge mechanism connecting the upper link's first end to the lower arm bracket, and an upper arm bracket attached to the upper link's second end. The hinge mechanism can have a shaft, a clutch bearing, and a friction pack. When assembled, the arm assembly's hinge mechanism will provide minimal resistance to a user raising an attached flat-panel display. However, the hinge mechanism's friction pack will provide resistance to the lowering of the arm assembly, thereby supporting the weight of an attached flat-panel display and effectively locking the adjustable display arm in the desired position.