Patent ID: 7828230

Claim:
A sprinkler, comprising: a riser; an impeller mounted in the riser; a nozzle rotatably mounted at an upper end of the riser; a drive assembly including a reversing mechanism and a reduction gear train coupling the impeller and the nozzle; and a clutch in the drive assembly including a clutch member having an axis of rotation and located between an output gear of the reduction gear train and an input gear of the reversing mechanism, the clutch member providing a positive drive connection under a normal load and axially displacing and slipping under an excessive load, the clutch member directly engaging the output gear of the reduction gear train, the clutch member and the output gear having complementary projections and recesses, the clutch further including a drive shaft having a lower end coupled to the clutch member and an upper end coupled to the reversing mechanism, and the upper end of the drive shaft being coupled to the reversing mechanism of the drive assembly with a spur gear.