Patent ID: 6015102
Filing Date: 2000-01-18
Classification: A01G,Y02A,Y10S

Abstract:
A drip irrigation hose comprising:a tubular body enclosing a water supply passage;an external emitter attached to the outside of the tubular body, the emitter comprising a front wall, a back wall, side walls and a top wall defining a flow regulating channel, and further comprising an outlet in at least once of the walls; andan inlet to the emitter, the inlet being in fluid communication with the water supply passage and the flow regulating channel;a purging bulb having an internal region in fluid communication with the flow regulating channel;whereby water flows through the water supply passage, through the inlet into the emitter, through the flow regulating channel, and out the outlet, and whereby pressure exerted on the purging bulb generates local pressure to back-flush or eject contaminants in the emitter.