US 2003/0196821 A1Published application

Cover assembly for a concealed sprinkler head

AssigneeSenju Sprinkler Co., Ltd.

InventorsTetsuro Kikuchi, Hiroki Ishikawa, Yasuaki Koiwa

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Abstract

A concealed sprinkler head is mounted above the ceiling of a fire protected zone. The sprinkler head includes a housing within which a valve and other operative parts are contained. A decorative cover plate is secured to the housing to conceal the sprinkler head within the ceiling so that none of the operative parts is visible. The cover assembly includes a thin metallic cover plate made of a heat conductive material such as copper, and a metallic skirt including a cylindrical wall threaded on the housing, an annular flange extending outwardly from one end of the cylindrical wall, and a plurality of tabs extending downwardly from the flange. A plurality of heat insulative elements are disposed between the tabs and the cover plate. A metallic layer is attached to the lower surface of each of the insulative elements. A layer of fusible material is disposed between the metallic layer and the cover plate to secure each of the insulative elements to the cover plate through the metallic layer.

Claims17

Dependent claims

A cover assembly for a concealed sprinkler head, said concealed sprinkler head being mountable within the ceiling of a fire protected enclosure and including a cylindrical housing, said cover assembly comprising:

a metallic cover plate mountable substantially flush with the ceiling to conceal the sprinkler head within the ceiling, said cover plate being made of a heat conductive material;
a metallic skirt including a substantially cylindrical wall, an annular flange extending outwardly from one end of the cylindrical wall, and a plurality of tabs extending generally downwardly from said flange, said cylindrical wall of said skirt being adapted to be connected to the cylindrical housing of the sprinkler head;
a plurality of heat insulative elements having upper and lower surfaces, said upper surface of each of said insulative elements being secured to a corresponding one of said tabs;
a metallic layer attached to the lower surface of each of said insulative elements;
and
a layer of fusible material disposed between said metallic layer and said cover plate to secure each of said insulative elements to said cover plate through said metallic layer.

3 more elements

Dependencies are inferred from the claim text.