Patent ID: 8651444

Claim:
A support apparatus comprising: an arm assembly having a first arm member, the first arm member defining a cavity; a mounting body for a display device; an axle receiving body attached to the mounting body; an axle that extends through the axle receiving body and into the cavity of the first arm member, the axle having a hole; a friction adjustment mechanism comprising: a plurality of rotatable elements positioned in the cavity that are attached to the axle such that the rotatable elements rotate when the axle rotates, a plurality of friction inducing elements positioned in the cavity, each of the friction inducing elements attached to the first arm member, each of the friction inducing elements having an inner opening, through which the axle extends, the inner opening of each of the friction inducing elements being sized so that the axle is rotatable when extending through the inner opening, the friction inducing elements being positioned adjacent to the rotatable elements such that at least one of the rotatable elements rubs against or engages at least one of the friction inducing elements when the axle rotates, and a rotatable member extending into the hole of the axle, the rotatable member rotatable in a first direction to move further into the hole and rotatable in a second direction that is opposite the first direction to move out of the hole, movement of the rotatable member in the first direction causing the friction inducing elements to be further compressed against the rotatable elements to increase an amount of friction caused by rotation of the axle.