Patent ID: 6688539
Filing Date: 2004-02-10
Classification: B05B

Abstract:
A rotor plate for a sprinkler comprising a water impingement surface bounded by an annular peripheral wall and having a radial center, and adapted to be impinged upon by a stream emitted from a nozzle, said water impingement surface formed to include at least one radially extending drive channel having an entrance proximate the radial center and an exit in said peripheral wall, said at least one drive channel curving from entrance to exit in a first direction so as to cause the plate to rotate when the stream exits at an offset from the center of rotation; at least one range channel extending substantially radially with little or no curving, from entrance to exit; and at least one brake channel curving from entrance to exit in a second direction opposite said first direction to thereby resist rotation of said plate caused by said at least one drive channel.