US Patent 7530474 Water discharging devices

A water discharging amusement device incorporates a housing defining an interior chamber, an inlet conduit dimensioned and arranged to receive water from a source of pressurized water and to direct received pressured water into the interior chamber, a rotatable nozzle assembly dimensioned and arranged to spin while receiving pressurized water from the interior chamber and to eject a substantially spiral stream of water as it spins, and a drive assembly disposed within the chamber and dimensioned and arranged to convert linear forces imparted by pressurized water arriving via the inlet into rotary forces for rotating the rotatable nozzle.