Universal abrasive disc

Abstract

An abrasive disc adapted to mount on a surface of a sander, such as an orbital sander, having either five or eight dust extraction holes is provided. The abrasive disc includes a plurality of apertures arrangeable to at least partially overlap each of the five or eight dust extraction holes of the orbital sander.

1 . An abrasive disc adapted to mount on a surface of a sander having either five or eight dust extraction holes, the disc comprising a plurality of apertures arrangeable to at least partially overlap each of the five or eight dust extraction holes of the sander, the plurality of apertures comprising at least one aperture having two elongated portions connected at one end, the elongated portions extending along two axes forming an angle θ of between 90° to 150°, the center of the abrasive disc being located inside the angle θ. 
     
     
         2 . The abrasive disc of  claim 1 , wherein the plurality of apertures comprises at least one substantially circular-shaped aperture. 
     
     
         3 . The abrasive disc of  claim 1 , wherein the plurality of apertures comprises at least one aperture elongated along a single axis. 
     
     
         4 . The abrasive disc of  claim 1 , wherein the at least one aperture is arranged in symmetry with a second identically-shaped aperture along a first axis of symmetry intersecting the center of the abrasive disc. 
     
     
         5 . The abrasive disc of  claim 4 , wherein the plurality of apertures comprises two elongated apertures that are each elongated along a single axis, the elongated apertures being arranged in symmetry with one another along the first axis of symmetry. 
     
     
         6 . The abrasive disc of  claim 4 , wherein the plurality of apertures comprises two substantially circular-shaped apertures arranged in symmetry with each other along a second axis of symmetry substantially perpendicular to the first axis of symmetry and intersecting the center of the abrasive disc. 
     
     
         7 . The abrasive disc of  claim 6 , wherein the first axis of symmetry intersects the centers of the substantially circular-shaped apertures. 
     
     
         8 . An abrasive disc adapted to mount on a surface of a sander having either five or eight dust extraction holes, the disc comprising a plurality of equally-sized apertures arrangeable to at least partially overlap each of the five or eight dust extraction holes of the sander, the plurality of apertures comprising a first plurality of apertures disposed within a first annular ring and a second plurality of apertures disposed within a second annular ring, the first and the second annular rings each having the same center as the abrasive disc and each having a width equal to a diameter of each aperture, wherein an outer circumference of the first annular ring substantially overlaps an inner circumference of the second annular ring. 
     
     
         9 . The abrasive disc of  claim 8 , wherein each of the first and second plurality of apertures is disposed equidistantly within the first and the second annular rings, respectively. 
     
     
         10 . The abrasive disc of  claim 9 , wherein each of the first plurality of apertures is disposed within the same distance of the two nearest apertures of the second plurality of apertures. 
     
     
         11 . The abrasive disc of  claim 8 , wherein an equal number of apertures are disposed within the first and the second annular rings. 
     
     
         12 . The abrasive disc of  claim 8 , wherein at least nine apertures are disposed within each of the first and the second annular rings. 
     
     
         13 . The abrasive disc of  claim 8 , further comprising a third plurality of apertures disposed within a third annular ring having the same center as the abrasive disc and having a width equal to the diameter of the third apertures. 
     
     
         14 . An abrasive disc adapted to mount on a surface of a sander having either five or eight dust extraction holes, the disc comprising a plurality of apertures arrangeable to at least partially overlap each of the five or eight dust extraction holes of the sander, the plurality of apertures comprising a first plurality of apertures arranged at a first distance from the center of the abrasive disc, a second plurality of apertures arranged at a second distance from the center of the abrasive disc, and a third aperture arranged at a third distance from the center of the abrasive disc, wherein each of the first and second apertures is arranged symmetrically with respect to a corresponding aperture along a first axis of symmetry that intersects the center of the third aperture and the center of the abrasive disc. 
     
     
         15 . The abrasive disc of  claim 14 , wherein none of the first and second plurality of apertures is arranged symmetrically with respect to a corresponding aperture along a second axis located perpendicularly to the first axis of symmetry through the center of the abrasive disc. 
     
     
         16 . The abrasive disc of  claim 14 , wherein each of the first and second plurality of apertures comprises four apertures. 
     
     
         17 . The abrasive disc of  claim 14 , wherein each of the first and second plurality of apertures and the third aperture is substantially circular-shaped. 
     
     
         18 . The abrasive disc of  claim 14 , wherein two apertures of the first plurality of apertures are arranged in close proximity to the third aperture. 
     
     
         19 . The abrasive disc of  claim 14 , wherein the first and second plurality of apertures are alternatively arranged around the center of the abrasive disc. 
     
     
         20 . The abrasive disc of  claim 14 , wherein the plurality of apertures are equally-sized.