Fire barrier

Details Fire barrier Fire barrier

1993-04-19

1994-10-04

Friedman, Carl D.

Static structures (e.g., buildings)

Controlled by condition responsive means

522208, 52232, F16K 1738

Patent

active

053514483

ABSTRACT:
A fire barrier is provided for use in connection with a structural wall having a hole through which a thermoplastic conduit normally extends. The barrier includes a housing having a side wall extending around the hole and the conduit, and defining an interior space extending between the conduit and the housing. A first end of the housing is attached to the structural wall, and the opposing end is closed around the conduit. A first support matrix is provided within the housing adjacent the second end, and defines a plurality of voids extending radially between the conduit and the side wall of the housing. A second support matrix provided adjacent the first axial end defines a plurality of longitudinal voids extending in a direction substantially parallel to the length of the conduit. An intumescent material substantially fills the voids of the support matrices so that as a fire adjacent the wall causes failure of the conduit, the intumescent material expands in the directions of orientation of the voids and forms a barrier that prevents the fire from propagating through the hole.

REFERENCES:
patent: 3976825 (1976-08-01), Anderberg
patent: 4850385 (1989-07-01), Harbeke
patent: 5103609 (1992-04-01), Thoreson et al.
patent: 5105592 (1992-04-01), MacMillan et al.
patent: 5155957 (1992-10-01), Robertson et al.

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