Patent ID: 8220556
Filing Date: 2012-07-17
Classification: A62C

Abstract:
1. A concealed sprinkler head comprising: a sprinkler body having a central axis and a central orifice disposed about said central axis, said central orifice defining an inlet and an outlet, and said sprinkler body configured for attachment to a fire extinguishing fluid supply line; a deflector moveably mounted to said sprinkler body; a sealing assembly for sealing said outlet; a thermally sensitive trigger assembly configured to releasably urge said sealing assembly into said sealing engagement with said outlet; a housing attached to said sprinkler body, said housing having an annular flange beyond said outlet; and a cover plate removably mounted to said flange of said housing, said cover plate having a planar portion and a periphery extending around said planar portion, said planar portion having an outer surface lying in a plane generally orthogonal to said central axis, said planar portion mounting said cover plate to said flange of said housing, and said plate further including an angled portion forming a lip, said angled portion projecting outwardly from said planar portion in a direction relative to said central axis that extends axially away from the sprinkler body to thereby form a passageway, said passageway extending inwardly from said periphery of said plate to enable air to travel between said periphery and said flange of said housing and towards said thermally sensitive trigger assembly.