Static structures (e.g. – buildings) – Draft stop between studs; e.g. – fire stop
Patent
1989-06-29
1991-10-22
Chilcot, Jr., Richard E.
Static structures (e.g., buildings)
Draft stop between studs; e.g., fire stop
52220, 52221, E04B 194
Patent
active
050583468
ABSTRACT:
A fire protection collar for one or more conduits penetrating through openings in fireproof partitions such as walls or ceilings. The fire protection collar includes at least two stable, smoke tight, fireproof coverings of a thermally insulating material sealing the space between the outer surfaces of the partition and the exterior surface of the conduit. A filling of either a plurality of sheets or particles of expanded material, with a thermal conductivity of the same order of magnitude as concrete, essentially fills up the space between the coverings, the conduit and the partition. When the fire protection collar is used for heatproof conduits, the filling is in contact with the exterior surface of the conduit. However, when the fire protection collar is used for conduits which are not heatproof, i.e., may be altered or may even collapse in the event of fire, a jacketing concentrically surrounds the conduit between the coverings with an intermediate layer of expandable material situated between the jacketing and the covering, with the filling essentially filling up the space between said jacketing and said coverings. In the event of fire, the expandable material expands and the forces arising therefrom are directed toward the conduit to pinch off the conduit.
REFERENCES:
patent: 4221029 (1980-09-01), Johnson
patent: 4363199 (1982-12-01), Kucheria et al.
patent: 4538389 (1985-09-01), Heinen
patent: 4669244 (1987-06-01), Szoke
patent: 4669759 (1987-06-01), Harbeke
patent: 4796401 (1989-01-01), Wexler
Chilcot Jr. Richard E.
Watson Linda
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