Patent ID: 7597273
Filing Date: 2009-10-06
Classification: B05B

Abstract:
1. A sprinkler comprising: a sprinkler head including a nozzle; a housing for communicating with a water source and defining a flow passageway; and a turbine at least a portion of which is located in the flow passageway, the turbine operably coupled to the sprinkler head for rotational driving thereof, wherein the turbine includes vanes for communicating with flow through the passageway, the vanes being oriented to receive a directed flow through the passageway to drive the turbine and sprinkler head, the vanes further being arranged on a deflectable portion configured to have a first position, in which the vanes are aligned with the directed flow when the turbine is rotating in an acceptable range of revolutions per minute and configured to shift from the first position to a second position, in which at least a portion of the vanes are shifted outwardly to decrease alignment with the directed flow, to prevent the turbine from rotating in an unacceptable range of revolutions.