Sprinkler head having cap ejection system

Details Sprinkler head having cap ejection system Sprinkler head having cap ejection system

1991-10-04

1993-03-23

Marmor, Charles A.

Fire extinguishers

Sprinkler heads

169 38, A62C 3714

Patent

active

051955920

ABSTRACT:
A sprinkler head including a frame or body having an opening to be connected to a water line. The body also includes a pair of arms which are joined together at a junction. A cap encloses the opening and a releasable mechanism, such as a frangible glass bulb, is connected between the junction and cap. When the sprinkler head is exposed to an elevated temperature, the glass bulb will fracture releasing the cap to permit water to be discharged from the opening. The sprinkler head includes an ejection mechanism which prevents the cap from hanging up on the arms. The ejection mechanism has a base connected to a projection on the upstream side of the cap and a skirt extends longitudinally from the base and terminates in a thin edge facing upstream. When the cap is released by fracture of the bulb, the water pressure will force the cap axially and when the cap strikes the arms the cap will tilt slightly causing the water pressure to then act against the side surface of the skirt to provide a rapid tilting and ejection of the cap from the frame.

REFERENCES:
patent: 2534066 (1950-12-01), Rowley
patent: 4108247 (1978-08-01), Mohler
patent: 4167974 (1979-09-01), Job
patent: 4991656 (1991-02-01), Polan

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