US Patent 10039211 Rack for computing equipment

Provided is a base for a server rack, the base comprising a first arm extending in a first direction; a second arm extending in a second direction, different from the first direction, the first arm and second arm each having a bottom configured to face a floor and a top configured to face toward rack-mounted computing equipment; a plurality of height-adjustable stands extending from the bottom of the first arm and the second arm; and a plurality of ball-bearings extending from the top of the first arm and the second arm.