Pop-up sprinkler with anti-clogging valve

Details Pop-up sprinkler with anti-clogging valve Pop-up sprinkler with anti-clogging valve

1987-11-13

1989-12-12

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

With cleaning means, drip collecting, waste disposal or soil...

Nozzle cleaner, flusher or drainer

239205, 239578, 2395821, 137242, 251248, B05B 316

Patent

active

048862096

ABSTRACT:
A sprinkler includes a pop-up stem that defines a passage extending to a downwardly facing opening that is circumscribed by a generally planar surface and covered by a valve element dimensioned and arranged in confronting relationship with the planar surface to at least partially block the opening. The valve element is mounted on the stem to enable movement in a plane generally parallel to the planar surface in order to vary an amount by which the valve element blocks the opening, and rotation of a shaft causes valve element movement to restrict the flow of liquid through the opening a selected amount. A resiliently deformable valve element may be loosely mounted to provide clearance sufficient to enable movement of particulate material from between the valve element and the planar surface while enabling the liquid to urge the valve element toward the planar surface. A splined shaft that engages teeth on the valve element may be resiliently deformable so that it twists slightly when movement of the valve element is impaired in order to urge the valve element slightly away from the planar surface as well as to prevent damage to the teeth.

REFERENCES:
patent: 2086281 (1937-07-01), Nelson et al.
patent: 3125296 (1964-03-01), Gold
patent: 3383047 (1968-05-01), Hauser
patent: 3645451 (1972-02-01), Hauser
patent: 3785565 (1974-01-01), Perry
patent: 3940066 (1976-02-01), Hunter
patent: 4272024 (1981-06-01), Kah, Jr.
patent: 4729511 (1988-03-01), Citron

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