Pop-up sprinkler head having flow adjustment means

Details Pop-up sprinkler head having flow adjustment means Pop-up sprinkler head having flow adjustment means

1974-10-16

1976-02-24

Ward, Jr., Robert S.

Fluid sprinkling, spraying, and diffusing

With fixed support for or ground installed supply means

Embedded or buried sprinkler

239582, 2395533, 239575, 239579, B05B 116, B05B 130, B05B 1510

Patent

active

039400662

ABSTRACT:
A pressure control mechanism for an irrigation sprinkler having a rotatable riser with an orifice of predetermined shape with the riser sealed at the water inlet end thereof. In one embodiment, a stationary valve ring is snug-fit around the riser and circumferentially stationary with respect to the riser. The valve ring is spring biased against a shoulder on the riser at the inlet end and adapted to rise with the riser. The valve ring has an orifice which is congruent to the orifice of the riser whereby rotation of the riser with respect to the stationary valve ring regulates the flow of water through the valve orifice and the riser orifice to thereby regulate the flow of water through the sprinkler. In an alternative embodiment, a valve disc is secured to the inlet end of the riser and is circumferentially stationary with respect to the riser. The riser has a plug fixedly mounted at the inlet end and is keyed for limited rotation. Both the valve disc and the riser have orifices which are congruent whereby rotation of the riser with respect to the stationary valve disc regulates the flow of water through the valve orifice and the riser to thereby regulate the flow of water through the sprinkler.

REFERENCES:
patent: 1853805 (1932-04-01), Elder
patent: 1892959 (1933-01-01), Lippert
patent: 1931761 (1933-10-01), Hertel
patent: 1953518 (1934-04-01), Sweetland
patent: 2125978 (1938-08-01), Arbogast
patent: 2763512 (1956-09-01), Porter
patent: 2796293 (1957-06-01), Becker
patent: 3263929 (1966-08-01), Seablom
patent: 3323725 (1967-06-01), Hruby
patent: 3454225 (1969-07-01), Hunter
patent: 3794249 (1974-02-01), Lockwood

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