Acoustical door

Details Acoustical door Acoustical door

1989-05-30

1991-03-12

Fuller, Benjamin R.

Acoustics

Sound-modifying means

Sound absorbing panels

181287, 181288, 181290, E04B 182

Patent

active

049985981

ABSTRACT:
A light-weight acoustical door is comprised of a wood frame separating and joining first and second panels and providing a space between the panels which filled with fibrous sound-absorbing material. Each panel is comprised of at least three layers, two of which are significantly more dense than the other layer. One of the dense layers may be made from a a weighted plastic sheet. One of the panels may have grooves formed in the inner face thereof.

REFERENCES:
patent: 2116270 (1938-05-01), LeGrand
patent: 3319738 (1967-05-01), Wehe, Jr.
patent: 3506088 (1970-04-01), Sherman
patent: 3534829 (1970-10-01), Schneider
patent: 3656576 (1972-04-01), Gubela
patent: 4042061 (1977-08-01), Murakami
patent: 4621709 (1986-11-01), Naslund

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