Fluid sprinkling – spraying – and diffusing – With cleaning means – drip collecting – waste disposal or soil... – Solid scraping or clearing member
Patent
1997-07-14
1999-10-12
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
With cleaning means, drip collecting, waste disposal or soil...
Solid scraping or clearing member
239203, 239205, 239113, 239114, 251 35, 277550, 92 87, 92168, 285110, B05B 1502
Patent
active
059644087
ABSTRACT:
An improved pop-up irrigation sprinkler with integral flow control valve, and an improved separate flow control valve, defined by a dual flowpath for pilot flow within the flow control valve; a stem-flushing feature using an interrupter disc (54) mounted on a piston (48), providing a flowpath for a brief hydraulic flushing cycle after a momentary interruption of flow; a direct acting hydraulic pilot valve (92) to permit hydraulic control of an electric type sprinkler or a separate flow control valve; an improvement of the bearing guide (80) by the addition of a resilient barrier seal (84) to prevent seizing of the stem to the bearing guide when fully extended, the seal maintaining a close fit to the stem and yet being sufficiently resilient to permit the flushing of the stem; and a variable orifice in the inlet to the bonnet chamber to retard the initial opening rate of the valve.
REFERENCES:
patent: 2573369 (1951-10-01), Snoddy
patent: 3020925 (1962-02-01), Randall et al.
patent: 3712578 (1973-01-01), Dawson
patent: 3921910 (1975-11-01), Hayes et al.
patent: 3934820 (1976-01-01), Phaup
patent: 4058287 (1977-11-01), Fromfield
patent: 4173306 (1979-11-01), Ridgway
patent: 4682732 (1987-07-01), Walto
patent: 5137307 (1992-08-01), Kinsey
Cota Albert O.
Ganey Steven J.
Kashnikow Andres
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