DROPPER Russian patent published in 2004 - IPC

FIELD: agricultural engineering, in particular, drop irrigation equipment for irrigation of vegetable and garden crops, as well as for berry fields and vineyards. SUBSTANCE: dropper has case and cover, both equipped with inlet and outlet openings. Membrane is positioned in case below cover and adapted for engagement with case lower surface when pressure is created in case. Contacting surface has supporting platform positioned in case upper part and made in the form of rotating member converging to its lower part. Dropper is equipped with additional membrane and hollow spherical member arranged between additional and main membranes. Each membrane is provided with constantly open gauged orifices and temporarily open gauged orifices arranged in mid portion of membrane. Cover internal surface is arranged symmetrically with respect to case internal surface. EFFECT: wider operational capabilities and improved quality of irrigation. 3 cl, 3 dwg