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US 7,530,504 B1Granted
Clutch for rotor-type sprinkler
AssigneeHunter Industries, Inc.
InventorsFred M. Danner, Ronald H. Anuskiewicz
Life of this patent
Estimating the term…
Abstract
A sprinkler includes a riser, an impeller mounted in the riser, and a nozzle rotatably mounted at an upper end of the riser. A drive assembly couples the impeller and the nozzle. A clutch in the drive assembly includes a radially deformable collet that surrounds a drive shaft. A spring urges the collet against the drive shaft and provides a positive drive connection under a normal load and slips under an excessive load.
Claims27
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 coupling the impeller and the nozzle;
- and
- a clutch in the drive assembly including a radially deformable collet surrounding a drive shaft that provides a positive drive connection under a normal load and slips under an excessive load and wherein the collet includes a split ring that defines radially deformable fingers and a spring that urges the fingers of the collet against the drive shaft.
3 more elements
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 coupling the impeller and the nozzle;
- and
- a clutch in the drive assembly inside of a spur gear between an output gear of a reduction gear train in the drive assembly and a drive shaft connected to a reversing mechanism of the drive assembly that provides a positive drive connection under a normal load and for slips under an excessive load and wherein the clutch includes a radially deformable collet surrounding the drive shaft and a spring that urges the collet against the drive shaft.
3 more elements
A clutch, comprising:
- a radially deformable collet in the form of a split ring integrally formed inside a spur gear and dimensioned for surrounding a drive shaft with external teeth, a spring surrounding the collet for urging the collet against the drive shaft, the collet having internal teeth that engage the external teeth on the drive shaft in non-slip fashion under a normal load and disengage and allow slippage under an excessive load.
A sprinkler, comprising:
- a riser;
- a turbine mounted in the riser;
- a nozzle turret rotatably mounted at an upper end of the riser;
- a drive assembly coupling the turbine and the nozzle turret;
- and
- a clutch in the drive assembly including a radially deformable split ring surrounding a drive shaft, the split ring being integrally formed in the center of a spur gear, the split ring having internal teeth that engage external teeth on the shaft, and a spring that urges the split ring against the drive shaft to engage the internal and external teeth under a normal load and disengage the internal and external teeth under an excessive load and allow slippage.
3 more elements
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 coupling the impeller and the nozzle;
- and
- a clutch in the drive assembly including a radially deformable collet surrounding a drive shaft and a spring that urges the collet against the drive shaft for providing a positive drive connection under a normal load and for slipping under an excessive load.
3 more elements
Dependencies are inferred from the claim text.