US 4,094,379 AGranted

Sound-absorption panel

AssigneeBody Guard, Inc.

InventorDavid I. Steinberger

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Abstract

A sound barrier and sound-absorption panel preferably of a transparent nature so as not to interfere with vision of and light for the machine or other noise-emitting device, to be shielded or enclosed by one or more of the panels. The panel is formed of transparent sound-reflecting material and sound-absorbing material so arranged relatively that the sound waves are received by the panel and deflected into the sound-absorbing material. The reflecting material and sound-absorbing material are arranged to provide one or more sound-receiving pockets or cavities each of which has an outwardly-diverging sound-reflecting wall surface which faces toward the sound-emitter. The sound-absorbing material is in the form of an outwardly-extending member so located in the pocket or cavity as to absorb sound waves which are received in the pocket or cavity and are deflected into the sound-absorbing member by the sound-reflecting wall surface.

Claims11

Dependent claims

A sound-absorbent structure comprising an outer shell of high-density sound-deflecting material forming a cavity with sound-deflecting walls and a mouth adapted to open toward the sound emitter, and a body of low-density sound-absorbent material disposed within the cavity and extending outwardly relative thereto in spaced relationship to the walls of said cavity;

said sound-deflecting walls having inner plane surfaces diverging at an angle less than ninety degrees from an inner vertex, said sound-absorbent body being in the form of a strip of material having opposed plane surfaces and inner and outer edges with its inner edge at the vertex between said sound-deflecting walls and with its outer edge exposed at a position substantially outwardly thereof, said sound-absorbent strip bisecting said cavity formed by said diverging sound-deflecting walls to provide pockets at each side of said strip, each of said pockets having a plane sound-deflecting surface formed by one of said sound-deflecting walls and a plane absorbing surface adjacent thereto and on said sound-absorbing strip which are disposed relatively at an angle of less than 45.degree..

Dependencies are inferred from the claim text.