Ceiling fixture firestop
AssigneeUrsatech Ltd.
InventorsXiaoxiong Luo, John B. Page
Life of this patent
Estimating the term…
Abstract
A system for use with a ceiling fixture, a portion of which projects though an opening in a ceiling wall, for assisting in preventing spread of fire through the opening. The system has a metal collar for lining the opening. The metal collar has an upper rim overlying a top surface of the ceiling wall at the opening, a middle section facing an inner edge of the ceiling wall at the opening and a lower rim underlying a bottom surface of the ceiling wall at the opening. The system also has an intumescent ring for surrounding the projecting portion of the fixture so as to be interposed between the metal collar and the projecting portion of the fixture.
Claims19
A system for use with a ceiling fixture, a portion of which projects though an opening in a ceiling wall, for assisting in preventing spread of fire through said opening, said system comprising:
- an intumescent element supported in said fixture to block an opening of said fixture in event of fire;
- a metal collar for lining said opening, said metal collar having an upper rim for overlying a top surface of said ceiling wall at said opening, a middle section for facing an inner edge of said ceiling wall at said opening and a lower rim for underlying a bottom surface of said ceiling wall at said opening;
- an intumescent ring for surrounding said portion of said fixture so as to be interposed between said metal collar and said portion of said fixture to wedge said housing and metal collar in said opening in event of fire;
- and
- an intumescent caulk for application to a surface of said middle section of said metal collar between said upper rim and said lower rim.
A ceiling fixture system comprising:
- a ceiling fixture having a portion projecting through an opening in a ceiling wall and an intumescent element to block an opening of said ceiling fixture in event of fire;
- a metal collar lining said opening with an upper rim overlying a top surface of said ceiling wall at said opening, a middle section facing an inner edge of said ceiling wall at said opening and a lower rim underlying a bottom surface of said ceiling wall at said opening, wherein said middle section is interposed between said opening and said portion of said fixture;
- an intumescent ring interposed between said middle section and said housing, to wedge said housing and metal collar in said opening in event of fire;
- and
- an intumescent caulk applied to a surface of said middle section of said metal collar between said upper rim and said lower rim.
A ceiling fixture system comprising:
- a ceiling fixture having a portion projecting though an opening in a ceiling wall;
- an intumescent element supported in said ceiling fixture to block an opening of said fixture in event of fire;
- a metal collar lining said opening and supported by said ceiling wall with an upper rim of said metal collar overlying a top surface of said ceiling wall at said opening, a middle section of said metal collar facing an inner edge of said ceiling wall at said opening and a lower rim of said metal collar underlying a bottom surface of said ceiling wall at said opening;
- an intumescent ring surrounding said portion of said ceiling fixture so as to be interposed between said metal collar and said portion of said ceiling fixture, to wedge said housing and metal collar in said opening in event of fire;
- and
- an intumescent caulk between said middle section of said metal collar and said inner edge of said opening.
Dependencies are inferred from the claim text.