Patent ID: 7413505

Claim:
An adjustable belt sanding device comprising: (a) a housing; (b) a plurality of guide rollers located in the interior of the housing; wherein the guide rollers are held in place at each end by the housing; wherein the guide rollers are free to rotate about their respective axis of rotation; (c) a motor; a motor driven roller for driving a sanding belt within the housing; (d) the sanding belt; wherein the sanding side of the belt is located on the interior side of the belt; wherein part of the sanding belt traverses around all of the guide rollers and the motor drive roller located inside of the housing; and wherein the remaining part of the sanding belt is located outside of the housing, to define the working area; (e) a plurality of belt diameter adjustment knobs wherein the knobs are located on the exterior of the housing; wherein when the knobs are turned in a particular direction a pair of the guide rollers traverse to the left or right, depending on the particular direction, within the housing; wherein as the pair of the guide rollers traverse inwardly (towards the middle of the housing), the overall diameter of the working area of the sanding belt is shortened; wherein as the pair of the guide rollers traverse outwardly (away from the middle of the housing), the overall diameter of the working area of the sanding belt is increased.