Poke-through fire barrier structure with knock-out openings

Details Poke-through fire barrier structure with knock-out openings Poke-through fire barrier structure with knock-out openings

1991-04-15

1993-06-15

Picard, Leo P.

Electricity: conductors and insulators

Overhead

Towers, poles or posts

169 48, H02G 322

Patent

active

052201317

ABSTRACT:
A poke-through fire barrier with knock-out fire barrier openings. The structure includes a fire barrier element which is constituted from an intumescent material in the shape of a disc member which is adapted to be installed in a passage or opening formed in a fire-rated floor, and wherein the intumescent disc member incorporates one or more knock-outs for the passage therethrough of insulated conductors or wires.

REFERENCES:
patent: 3864883 (1975-02-01), McMarlin
patent: 4099020 (1978-07-01), Kohaut
patent: 4232493 (1980-11-01), Gray et al.
patent: 4336416 (1982-06-01), Goodsell
patent: 4433204 (1984-02-01), Wuertz
patent: 4638115 (1987-01-01), Benscoter
patent: 4770643 (1988-09-01), Castellani et al.
patent: 4899018 (1990-02-01), Sireci

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