Patent ID: 6883727
Filing Date: 2005-04-26
Classification: B05B

Abstract:
1. A rotating stream sprinkler, comprising: a rotatable deflector having an underside surface defining an array of vanes and an upper surface defining a radially outwardly inclined ramp; at least one jet port for directing at least one water jet into engagement with said vanes, said vanes subdividing and redirecting said at least one water jet into a plurality of relatively small water streams projected generally radially outwardly therefrom; a ball drive rotor mounted for rotation relative to said deflector and having at least one radially outwardly open ball track formed therein; each of said at least one ball track having a drive ball movably carried therein and supported on said inclined ramp, said drive ball having a size and mass for radially outward displacement along said ball track by centrifugal force in response to rotor rotation exceeding a predetermined rotational speed; at least one anvil carried by said deflector for repetitious impact engagement by said drive ball upon rotor rotation exceeding said predetermined rotational speed for rotatably displacing said deflector through a repetitious succession of relatively small rotational step; and a turbine drive arrangement for rotatably driving said rotor at a rotational speed exceeding said predetermined rotational speed.