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US 4,538,389 AGranted
Fire-break
AssigneeIntellectual Trade Cy S.A.
InventorHans-Dieter Heinen
Life of this patent
Estimating the term…
Abstract
There is described a fire-break for passing at least one hollow element such as pipe, sleeve, tube, through a building wall, notably a partition or ceiling, which comprises a flange from substantially incombustible material which is mounted around said element.
Claims12
A fire-break for passing a hollow element, such as a pipe, sleeve or tube through a building wall, partition or ceiling, comprising:
- an elongated flange formed from a substantially incombustible material mounted about the hollow element and extending to the wall on at least one side thereof, said flange including,
- a first layer of a fire-proof material extending to said element and on said wall;
- a second layer of incombustible fibers disposed on said layer;
- and
- at least one closable door means mounted within said hollow element and provided with means for closing the door means to block air flow within said hollow element in response to a fire.
2 more elements
Dependencies are inferred from the claim text.