Patent ID: 7740186

Claim:
An engine for directing a first water flow, comprising: an inlet; a first flow channel fluidly connected to the inlet; a second flow channel fluidly connected to the inlet; a first pulsating flow turbine providing a first pulse pattern operatively connected to the first flow channel; a second pulsating flow turbine providing a second pulse pattern positioned concentric with the first pulsating flow turbine and operatively connected to the second flow channel; a first outlet of the first flow channel leading to a first set of nozzles; a second outlet of the second flow channel leading to a second set of nozzles separate from the first set of nozzles; and a mode selector positioned between the inlet and the first and second flow channels and operable to alternately direct the first water flow from the inlet exclusively to the first flow channel, exclusively to the second flow channel, and simultaneously to both.