Slitted dirt seal for inground sprinkler heads

Fluid sprinkling – spraying – and diffusing – With solid means as guard or protector – Bumper or guard protects distributor

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Details

239205, B05B 1500

Patent

active

050057677

ABSTRACT:
A pop-up sprinkler head assembly for use during installation of an underground sprinkler system including a housing having an inlet for receiving water from an underground conduit and an open end extending upward from the inlet. The open end has an annular seal member which communicates with a pop-up body mounted within the housing. A compression spring biases the pop-up body in a first retracted position entirely within the housing and stresses in response to the movement of the pop-up body from the first retracted position to a second extended position partially extending from the housing. A shielding member releasably affixes to the housing in an aperture-shielding position and flexes outward in response to the movement of the pop-up body. When the pop-up body is in the first retracted position, such as after flushing and during installation operations, the shielding member isolates the interior of the housing from the unintended and unwanted deposit debris, dirt and the like.

REFERENCES:
patent: 1058549 (1913-04-01), Cathcart
patent: 1259902 (1918-03-01), Parker
patent: 2406745 (1946-09-01), Curtze
patent: 2513047 (1950-06-01), Pfeiffer
patent: 3282508 (1966-11-01), Roberts
patent: 3752403 (1973-08-01), Diest
patent: 3934820 (1976-01-01), Phaup
patent: 4682732 (1987-07-01), Walto
patent: 4752033 (1988-06-01), Groendyke

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