Patent ID: 7896977

Claim:
An automatic dishwasher comprising: a housing defining a wash chamber having multiple corners; a rotatable spray arm having a plurality of outlets and mounted within the wash chamber for rotation about an axis such that liquid supplied to the rotatable spray arm exits the outlets to provide a first wash zone that rotates with the rotatable spray arm; a liquid supply fluidly connected to the rotatable spray arm to provide liquid to the rotatable spray arm; at least one spray nozzle fixedly located within the wash chamber relative to at least one of the multiple corners and physically spaced from the rotatable spray arm to provide a second wash zone of liquid within the chamber; and a valve fluidly coupling the liquid supply to the at least one spray nozzle and moveable between an open position, where the valve permits a flow of liquid to the at least one spray nozzle, and a closed position, where the valve prohibits a flow of liquid to the at least one spray nozzle; wherein the valve is operably coupled to the rotatable spray arm such that continued rotation of the spray arm repeatedly moves the valve between the opened and closed positions to selectively supply liquid from the liquid supply to the at least one spray nozzle while the rotatable spray arm sprays liquid from the liquid supply within the wash chamber.