US Patent 8621990 Household appliance

A household appliance has a container for receiving working material and a housing that is isolated from the container by a wall. A rotatable working tool disposed inside the container. A motor for driving the working tool has a stator and a rotor. The stator is disposed within the housing so as to be isolated from the working material of the container. The rotor is disposed within the container and the working tool is preferably fixed to a shaft of the rotor.