Patent ID: 7270280

Claim:
An integral in-line dripper of flattened shape, bonded during an extrusion process to the internal surface of an irrigation pipe, said dripper having an inlet facing the inside of the pipe and an outlet in fluid communication with an outlet opening in the pipe wall, a first surface with an open meandering channel formed therein, the channel's inlet being in fluid communication with the dripper's inlet, and a second surface opposite said first surface, wherein the topography of said first surface of the dripper is so designed that said dripper is bonded during said extrusion process to said internal surface in any orientation about a radius of the pipe passing through said first and said second surfaces, with said internal surface closing tightly said meandering channel to form a flow-restriction labyrinth with an outlet constituting or being in fluid communication with said outlet of the dripper, wherein said dripper's inlet is a filtering inlet comprising multiple openings disposed on said second surface or on a peripheral surface connecting said first and second surfaces.