US Patent 8657125 Tray cleaning apparatus for electronic components

A tray cleaning apparatus having a top plate, a bottom plate, a first bearing plate assembly and a second bearing plate assembly. The first bearing plate assembly disposed between top plate and bottom plate comprises a first supporting plate, plural first blocks and plural second blocks, the first supporting plate comprises an inner surface having a first disposing area and a second disposing area. The first blocks are disposed at the first disposing area and the second blocks are disposed at the second disposing area. The second bearing plate assembly disposed between top plate and bottom plate comprises a second supporting plate, plural third blocks and plural fourth blocks, the second supporting plate comprises an outer surface having a third disposing area and a fourth disposing area. The third blocks are disposed at the third disposing area and the fourth blocks are disposed at the fourth disposing area.