Fluid sprinkling – spraying – and diffusing – With cleaning means – drip collecting – waste disposal or soil... – Nozzle cleaner – flusher or drainer
Patent
1983-03-24
1985-03-05
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
With cleaning means, drip collecting, waste disposal or soil...
Nozzle cleaner, flusher or drainer
239542, F16K 712, A01G 2500
Patent
active
045026319
ABSTRACT:
An improved trickle irrigation unit is provided having a resilient valve flap within a pressure chamber to control flow of irrigation water through an outlet port. The valve flap overlies the outlet port and a shallow channel including a small central outlet groove wherein the flap, channel, and groove cooperatively define a water flow path from the pressure chamber to the outlet port. The valve flap deforms into this flow path in response to water pressure within the pressure chamber to vary the flow path cross-sectional area to correspondingly control water flow to the outlet port. In accordance with the invention, the outlet port has a relatively narrow and elongated configuration extending preferably in longitudinal alignment with the outlet groove, wherein this narrow geometry prevents excessive valve flap deformation into the outlet port which could otherwise block the downstream end of the outlet groove to interfere with proper operation of the irrigation unit.
REFERENCES:
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patent: 3693888 (1972-09-01), Rondas
patent: 3779468 (1973-12-01), Spencer
patent: 3797754 (1974-03-01), Spencer
patent: 3807430 (1974-04-01), Keller
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patent: 4161291 (1979-07-01), Bentley
patent: 4344576 (1982-08-01), Smith
patent: 4424936 (1984-01-01), Marc
Kashnikow Andres
Rain Bird Sprinkler Mfg. Corp.
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