Drip level irrigation emitter unit

Details Drip level irrigation emitter unit Drip level irrigation emitter unit

1977-10-25

1980-06-24

Saifer, Robert W.

Fluid sprinkling, spraying, and diffusing

Conduit or nozzle attached irrigation-type decelerator

23953313, 239547, 138 43, F16D 100

Patent

active

042091330

ABSTRACT:
In a drip level irrigation emitter unit having flow restricting means, a control mechanism, inlet and outlet control chambers of the control mechanism, resiliently flexible membrane sealingly separating the control chambers, the membrane being displaceable with respect to the flow restricting means, the inlet and outlet chambers respectively communicating with an inlet and an outlet of the flow restricting means, the outlet chamber being formed with an outlet aperture of substantially smaller area than that of the membrane, the arrangement being such that upon the liquid pressure in the inlet chamber exceeding the liquid pressure in the outlet chamber by a predetermined amount, the membrane flexes elastically towards the outlet aperture so as to define, with a rim of the aperture, a restricted outflow path thereby limiting variations in the outflow rate.

REFERENCES:
patent: 2511733 (1950-06-01), Morrison
patent: 3546884 (1970-12-01), Timpe
patent: 3777980 (1973-12-01), Allport
patent: 3812876 (1974-05-01), Krieter
patent: 3815636 (1974-06-01), Menzel
patent: 4011893 (1977-03-01), Bentley

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