Patent ID: 6371390
Filing Date: 2002-04-16
Classification: A01G,Y02A

Abstract:
A drip irrigation hose, comprising:a hose for conducting pressurized water through its interior and formed with a plurality of outlets for discharging the water at longitudinally-spaced locations along the length of the hose; and a plurality of emitter elements secured to said hose at longitudinally-spaced locations along its length to define a plurality of turbulent flow passageways each in communication with the interior of the hose for discharging water from a hose outlet at a slow rate: characterized in that each of said turbulent flow passageways is defined by a relatively elastic first material coextruded with a relatively stiff second material different from said first material, such that the relatively elastic material is pressure-deformable as compared to the relatively stiff material to change the turbulent flow of each emitter element in response to the pressure of the water in the hose at the respective emitter element.