Firecode access panel

Details Firecode access panel Firecode access panel

1993-12-15

1995-08-15

Friedman, Carl D.

Static structures (e.g., buildings)

Irreversibly reactive component

522208, 49 7, 49463, E04B 194

Patent

active

054408431

ABSTRACT:
The panel assembly has a panel generally fitting in a hole and having an outer periphery running generally parallel to the inner periphery of the hole. Respective geometrically similar inner and outer annular frames on the inner and outer peripheries have confronting outer faces forming an annular gap around the panel between the inner and outer frames. One of the frames has an inner face forming an annular compartment extending around the respective periphery. This one frame is formed with an array of throughgoing openings extending between the respective inner and outer faces and the compartment is substantially closed except at the openings. An annular body of heat-swellable material is provided in the compartment so that on heating of the material it swells and exits the compartments through the openings to fill the gap.

REFERENCES:
patent: 3325941 (1967-06-01), Prucha
patent: 3491486 (1970-01-01), Caruth
patent: 3858355 (1975-01-01), Root
patent: 4144688 (1979-03-01), Dixon
patent: 4246304 (1981-01-01), Dixon
patent: 4679365 (1987-07-01), Herring
patent: 4850173 (1989-07-01), Beyer et al.
patent: 4931339 (1990-06-01), Malcolm-Brown
patent: 4998381 (1991-03-01), Langenhorst
patent: 5067278 (1991-11-01), Lyons

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