Acoustics – Sound-modifying means – Sound absorbing fence or screen
Patent
1989-05-04
1991-07-16
Brown, Brian W.
Acoustics
Sound-modifying means
Sound absorbing fence or screen
181290, B64F 126, E04H 1700, G10K 1100
Patent
active
050317210
ABSTRACT:
A sound barrier member for enabling a sound barrier providing good prevention of sound transmission sound reflection. The sound barrier member comprises an enclosure in a generally panel like configuration having a rectangular outer perimeter adapted to engage with other similar members to produce a sound barrier. The enclosure is formed by a front panel (10) and a rear panel unit (16) defining an enclosed space therebetween, with the front panel (10) having a plurality of openings (12) in a desired shape and array allowing sound transmission into the enclosed space. A sound absorbing material (25) is positioned in the enclosed space overlying at least the openings in the front panel (10) and being spaced forwardly of the rear panel unit (16). The sound absorbing material (25) has at least one sound absorbing batt (28,29) of fiberglass mat construction and a layer of solid plastics material (31) on a rearward face of at least one batt whereby a space is left between the layer of solid plastics material and the rear panel unit (16).
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patent: 4611687 (1986-09-01), Nixon
Barden Ronald
West Philip J.
Brown Brian W.
Road Construction Authority
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