US Patent 9339049 Batch-freezer machine for producing ice-cream and similar

A batch-freezer machine for producing ice-cream. The machine includes a cylindrical-shaped processing tank and a rotating mixing member housed in an axially rotatable manner inside the processing tank, and structured so as to be able to blend/mix the semi-solid mixture that forms inside the processing tank. The mixing member is provided with a centrifugal impeller which is arranged to directly face the inner face of the hatch, and is structured so as to be able to push/eject the semi-solid mixture located at the center of the opening of the processing tank towards the internal cylindrical lateral surface of the processing tank, when the mixing member rotates inside the processing tank.