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US 10,704,751 B2Granted
Downlight firestop
AssigneeUrsatech Ltd.
InventorsXiaoxiong Luo, John B. Page
Life of this patent
Estimating the term…
Abstract
An intumescent firestop element is supported within a light can by fire sensitive supports each having a base fabricated of a meltable or flammable material and a supporting element fabricated of metal and supported by the base, with the base joined to the light can. In response to a fire, the fire sensitive supports cease to support the firestop element which drops to a deployed position in the light can until arrested by a limiter.
Claims19
A downlight fixture comprising:
- a light can;
- a firestop element supported on or within said light can by at least one fire sensitive support, said firestop element fabricated of a polymer intumescent composition;
- each said fire sensitive support having a base fabricated of a meltable or flammable material and a supporting element fabricated of metal and having a lower wall sandwiched between said base and said light can, said supporting element supported by said base, said base joined to said light can;
- said at least one fire sensitive support, in response to a fire, ceasing to support said firestop element such that said firestop element is freed to drop to a deployed position;
- and
- said light can further having a limiter to limit a drop of said firestop element.
3 more elements
A fire sensitive support for use in a downlight comprising:
- a base fabricated of a meltable or flammable material;
- a supporting element fabricated of metal, said supporting element having a lower wall extending along a rear wall of said base, said lower wall having a projection projecting rearwardly from said base;
- said base having a feature locating said supporting element with respect to said base.
Dependencies are inferred from the claim text.