Patent ID: 7681810

Claim:
An emitter comprising: a plurality of distinct inlet apertures through each of which liquid separately enters the emitter; a manifold flow channel in fluid communication with said plurality of inlet apertures, the manifold flow channel arranged such that all liquid passing through the emitter must pass through the manifold flow channel; an elastic diaphragm that seats on the manifold flow channel; first and second parts that sandwich the diaphragm between them, wherein the first part is formed having the manifold flow channel; and an outlet aperture through which liquid that enters the emitter exits the emitter; wherein: liquid that enters the inlet apertures displaces only a portion of the diaphragm from the manifold flow channel so that the liquid can leave the manifold flow channel and flow through the emitter to reach the outlet aperture; and a feed flow channel is formed in the first part, wherein: the feed flow channel is spaced apart from manifold flow channel; the feed flow channel extends from a region alongside the manifold flow channel to beyond the manifold flow channel; the feed flow channel receives liquid that exits the manifold flow channel; and the feed flow channel directs flow of the received liquid in a direction to enter a labyrinth formed in the emitter.