Patent ID: 6374919
Filing Date: 2002-04-23
Classification: A62C

Abstract:
A concealed horizontal sidewall sprinkler arrangement comprising:a sprinkler body having a mounting end for supporting the sprinkler body in a horizontal orientation and connecting it to a source of fire extinguishing liquid; a cover support mounted on the sprinkler body; a cover supported from the cover support through a solder connection; the cover having a part projecting away from the cover support having at least four slots and being spaced from the cover support by an annular gap; and a plurality of springs interposed between the cover and the cover support for urging the cover away from the cover support and clearing the sprinkler body when the solder connection fuses at elevated temperatures; wherein the cover support includes a threaded cylindrical wall mounted on the sprinkler body and a sleeve having a cylindrical portion with helically arranged projections and an open ended slot on either side of each of the helically arranged projections forming a segment resiliently biased toward the cylindrical wall for slidable engagement of the cylindrical portion with the threaded cylindrical wall through axial motion.