Fast response sprinkler head

Details Fast response sprinkler head Fast response sprinkler head

1986-11-19

1988-07-19

Barefoot, Galen

Fire extinguishers

Sprinkler heads

Collapsible strut

169 42, A62C 3712

Patent

active

047578653

ABSTRACT:
A fast response sprinkler head. The sprinkler head includes a frame having a base portion connected to a source of water under pressure and a pair of arms extended outwardly from the base and are connected at a junction. A cap normally encloses the outlet in the base and a lever assembly, which extends between the junction and the cap, holds the cap in the closed position. The lever assembly includes a pair of lever members, with one of the lever members being biased in a direction away from the other lever member. A fusible link assembly interconnects the lever members and includes a pair of thin metal sheets that are joined together by a layer of fusible metal or solder. Each sheet is formed with a recess in one side edge and the recesses face each other to define an opening which receives the lever member. The corners of each sheet are bent generally normal to the sheet to provide fins or tabs. The fins increase the rate of heat transfer to the fusible metal to cause rapid release of the lever assembly to open the outlet.

REFERENCES:
patent: 1195593 (1916-08-01), Kersteter
patent: 1919235 (1933-07-01), Loepsinger
patent: 3866686 (1975-02-01), Goodsell, Jr. et al.
patent: 4273195 (1981-06-01), Fischer et al.

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