Sprinkler with magnetic nutating mechanism and related method

摘要

A sprinkler including a sprinkler head incorporating a nozzle; a spool (38) fixed to the sprinkler head in proximity to the nozzle; a cage assembly (48) loosely mounted on the spool (38), the assembly including a distribution plate (26) at a first end of the assembly downstream of the nozzle and a first magnet (50) at a second opposite end of the assembly upstream of the spool; a mounting element fixed to the assembly between the first and second ends, an inner edge of the mounting element loosely confined between upper and lower flanges of the spool; and a second magnet (44) fixed to the sprinkler head, axially between the spool and the first magnet.