Patent ID: 7681582

Claim:
A dishwasher comprising: a cabinet; a sump positioned within said cabinet and configured to collect water; an upper rack and a lower rack disposed within said cabinet, said upper and lower racks configured to support articles to be cleaned; an upper spray arm, a lower spray arm, and a third spray arm rotatably mounted within said cabinet; a first pump assembly operatively coupled to said lower spray arm and a second pump assembly operatively coupled to said upper spray arm, one of said first and second pump assemblies operatively coupled to said third spray arm, said first pump assembly coupled to a water supply system and to said sump, said first pump assembly configured to deliver water from the water supply system and from said sump, said second pump assembly coupled to the water supply system and to said sump, said second pump assembly configured to deliver water from the water supply system and from said sump; a drain pump configured to drain water from said cabinet; and a controller operatively coupled to said first and second pump assemblies.