Vandal resistant locking device for pop-up sprinkler nozzle hous

Details Vandal resistant locking device for pop-up sprinkler nozzle hous Vandal resistant locking device for pop-up sprinkler nozzle hous

1991-08-01

1992-08-25

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

With fixed support for or ground installed supply means

Embedded or buried sprinkler

239203, 239242, 239600, 285 29, 411203, 411329, B05B 316, B05B 1510

Patent

active

051411571

ABSTRACT:
A pop-up sprinkler having a nozzle housing threadably coupled to a pop-up stem, and including an axially projecting tab formed on the upper end of the stem which cooperates with spaced ribs formed on the inside of the nozzle housing to prevent over tightening of the nozzle housing relative to the stem during assembly and which resists unthreading of the nozzle housing from the stem to prevent vandals from unthreading the nozzle housing from the stem.

REFERENCES:
patent: Re25942 (1965-12-01), Reynolds
patent: 3064997 (1962-11-01), Karlsson
patent: 3950014 (1976-04-01), Doubleday
patent: 4200230 (1980-04-01), Gould
patent: 4212426 (1980-07-01), Choi
patent: 4681259 (1987-07-01), Troup
patent: 4787558 (1988-11-01), Sexton et al.
patent: 4840312 (1989-06-01), Tyler

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