US Patent 7740524 Drywall corner sanding tool

A sanding tool for sanding drywall corner joints is provided. The tool has an elongated mounting plate with a swivel handle attached to one side, and to the other side is attached one or more circular sanding disk holders to which disks of sanding medium are removably attached to a flat face of the sanding disk holder. The sanding disk holders are rotatably mounted on short axles attached to the mounting plate, and are each configured having a relatively wide edge that frictionally engages a wall adjacent the wall being sanded. This causes the sanding disk holder to rotate, sanding the drywall joint with a rotary motion instead of a linear motion.