Fire resistant, sound attenuating, drop seal door

Details Fire resistant, sound attenuating, drop seal door Fire resistant, sound attenuating, drop seal door

1976-03-31

1977-09-06

Downey, Kenneth

Movable or removable closures

Closure movement actuated retractable sealing, guiding or...

Strip movement in plane of closure

49309, E06B 7215

Patent

active

040459136

ABSTRACT:
A fire resistant acoustical panel, partition and door characterized by a unique arrangement of sound blocking material and a novel drop seal mechanism including a plurality of relatively movable, mating wedges disposed in a slot along the bottom of the door.

REFERENCES:
patent: 630216 (1899-08-01), Grover
patent: 3496676 (1970-02-01), Halpern

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