US Patent 7946512 Showerhead for a sanitary fitting

A shower head for a hand-held shower attachment contains, in the center of its jet disc, an insert with three individual nozzle bodies. Each individual nozzle body is designed for discharging an individual jet. To this end, it has a continuous jet opening. Each of these in individual nozzle bodies is mounted in a manner that enables it to move relative to the shower head and to the jet disc, and is placed in rotation by a water-driven rotor. Said continuous jet opening extends at an angle to the rotation axis of the individual nozzle body. When the individual nozzle body rotates, the jet exiting there from moves on an envelope of a cone. Each individual nozzle body, contains an aerating device that aspirates the air immediately next to the outlet opening and, inside the individual nozzle body, mixes the air with the water entering this individual nozzle body. As a result, the individual nozzle body discharges an aerated jet.