Multi layer sound-proofing structure

Details Multi layer sound-proofing structure Multi layer sound-proofing structure

1977-06-01

1978-06-13

Godici, N. P.

Acoustics

Sound-modifying means

Sound absorbing panels

52144, 181290, E04B 184

Patent

active

040943801

ABSTRACT:
A multi layered sound-proofing structure comprises: a first layer comprising a light aggregate and a binder and having a bulk density of from 0.1 to 2.0 g/cm.sup.3 and void fraction as continuous void of from 15 to 60%; a second layer of a material having a quality to insulate relatively high frequency sounds and penetrate relatively low frequency sounds; a third layer comprising a light aggregate and a binder, the same as or different from those of the first layer and having a bulk density of from 0.1 to 2.0 g/cm.sup.3 and void fraction as continuous void of from 15 to 60%, the first and second layers each overlying the third layer; and a fourth layer of a material having a high sound-insulating ability and covering all surfaces of a layered structure of said first, second and third layers except for the sound incident surface of said first layer. A perforated plate may be provided over the sound incident surface of the first layer with an air space therebetween.

REFERENCES:
patent: 2021359 (1935-11-01), Halstead
patent: 2220349 (1940-11-01), Plumb
patent: 2271929 (1942-02-01), Venzie
patent: 2340535 (1944-02-01), Jenkins
patent: 2915135 (1959-12-01), Lemmerman
patent: 3866001 (1975-02-01), Kleinschmidt
patent: 3956563 (1976-05-01), Spang

Affiliated with

Also associated with

Rating

Multi layer sound-proofing structure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi layer sound-proofing structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi layer sound-proofing structure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4467