Patent ID: 9119353
Filing Date: 2015-09-01
Classification: A01G,B05B

Abstract:
1. A subsurface emitter comprising: a body; an inlet into the body, the inlet configured to connect to a watering system to place an emitter interior in fluid communication with the watering system; an outlet into the body, the outlet configured to connect to the watering system to further place the emitter interior in fluid communication with the watering system; at least one nozzle attached to an end of the body; at least one port in the nozzle providing fluid communication between a nozzle interior and a subsurface area adjacent to the nozzle; a cylindrical piston residing between the emitter interior and the nozzle interior, a first larger cylindrical surface portion of the piston slides against an interior wall of the nozzle, and a piston seat resides between the first larger cylindrical surface portion and a second surface portion having a smaller diameter than the first larger cylindrical surface portion; a spring biasing the piston towards the body; a closed piston position wherein the first larger cylindrical surface portion of the piston covers the port and the piston seat resides against a body seat blocking fluid communication between the emitter interior and the nozzle interior and water from the watering system is prevented from escaping the nozzle into the subsurface area adjacent to the nozzle and the piston blocks the fluid communication through the port between the subsurface area and the nozzle interior; and an open piston position wherein fluid communication between the emitter interior and the nozzle interior is open and water from the watering system is allowed to escape the nozzle through the at least one port into the subsurface area adjacent to the nozzle.