Sprinkler head having a checking means for checking that fluid h

Details Sprinkler head having a checking means for checking that fluid h Sprinkler head having a checking means for checking that fluid h

1993-11-10

1994-12-20

Merritt, Karen B.

Fluid sprinkling, spraying, and diffusing

With signals, indicators, recorders, meters or changeable...

169 37, 116272, A62C 3712

Patent

active

053739892

ABSTRACT:
A sprinkler head includes a checking mechanism for checking from the outside that fluid such as fire protection water has been filled inside of a sprinkler head body. A method for checking that the fluid such as fire protection water has been filled includes providing a movable rod inside of the sprinkler head body in such a manner as to be axially moved inwardly and outwardly when the fluid has been filled inside of the sprinkler head body, and checking that the fluid has been filled inside of the sprinkler head body by observing a position of the movable rod from the outside.

REFERENCES:
patent: 2827122 (1958-03-01), Clark
patent: 3181496 (1965-05-01), Bilbrey
patent: 3691981 (1972-09-01), Rao
patent: 3874455 (1975-04-01), Klesow
patent: 4099573 (1978-07-01), Sahara
patent: 4134458 (1979-01-01), Kimura
patent: 4434855 (1984-03-01), Given, Jr.
patent: 5184683 (1993-02-01), Takamasa

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