Patent ID: 7431774

Claim:
A filter assembly for a dishwasher, the filter assembly comprising: a plurality of concentrically nested filters varying in size in a radial direction, wherein an outermost filter of the filter assembly has the smallest holes of each of the plurality of concentrically nested filters; water circulating means for supplying washing and rinsing water under pressure to the filter assembly, the water circulating means comprising a wash pump assembly configured to circulate water and a sump configured to collect runoff water; and at least one stationary cleaning nozzle provided at a predetermined position adjacent an outer circumference of the filter assembly facing the outermost filter of the plurality of concentrically nested filters, wherein the at least one cleaning nozzle is fixed to a portion of the sump proximate the filter assembly so as to be in communication with said water circulating means, and wherein the at least one cleaning nozzle is configured to spray pressurized water supplied by said water circulating means into the filter assembly.