Rotor type sprinkler with turbine over-spin prevention
Number of patents in Portfolio can not be more than 2000
United States of America
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May 18, 2004
Issued Date -
N/A
app pub date -
May 1, 2001
filing date -
May 1, 2001
priority date (Note) -
Withdrawn
status (Latency Note)
Importance
Abstract
A sprinkler includes a riser having a lower end for receiving a pressurized fluid and a nozzle that is mounted at an upper end of the riser for rotation about an axis. A turbine is mounted for rotation inside the riser. A drive mechanism connects the turbine to the nozzle so that rotation of the turbine by the pressurized fluid rotates the nozzle. The sprinkler includes mechanisms for preventing over-spinning of the turbine when the pressurized fluid is air or a mixture of air and water. Damage to the turbine drive shaft or its bearings due to over-spinning of the turbine is thereby avoided. In one version of the sprinkler, the over-spinning prevention mechanism applies a brake force to the turbine. In another version of the sprinkler, the over-spinning prevention mechanism re-directs air or a mixture of water and air around the turbine.
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Cited Art Landscape
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