Patent ID: 8663525

Claim:
A method for producing a drip emitter comprising: injecting a first material into an injection mold in a first injection and forming an emitter body with a stiff injection molded surface, wherein said emitter body comprises an inner portion comprising an inner surface and said stiff injection molded surface; an outer portion configured to contact an enclosing pipe wherein said outer portion comprises an outer surface; a first end; a second end; an inlet that comprises a filter or a fluid retainment valve place holder; a labyrinth coupled with the outer surface; a compensating chamber formed within an inner portion of said drip emitter; a compensating surface formed inside said compensating chamber wherein said compensating surface comprises said first material and not said enclosing pipe and where said compensating surface comprises a chamber exit that leads from said inner portion that does not contact said enclosing pipe to said outer surface that does contact said enclosing pipe; a pool coupled with the outer surface wherein the pool is configured to hold fluid when the emitter body is enclosed in said enclosing pipe; a fluid flow path leading from said inner portion to said outer portion of said drip emitter wherein said drip emitter is configured to allow said fluid to flow from the inlet, through the labyrinth, through the compensating chamber, through the chamber exit and to the pool through the fluid flow path; injecting a second material into said injection mold in a second injection and forming a compensating membrane wherein said second material comprises an elastomeric material to effect regulation of the drip emitter and wherein said compensating membrane is configured to compensate for pressure or flow of water by compensating against said stiff injection molded surface of said emitter body, wherein said compensating occurs entirely within said compensating chamber against said compensating surface in said inner portion and between said first material and said second material; and, deform under positive pressure said second material toward said compensating surface comprising said first material within said compensating chamber within said inner portion of said drip emitter.