1987-09-08
1989-06-13
Murtagh, John E.
Fences
Panel
52145, 181210, 181290, G10K 1100, E04B 186
Patent
active
048385247
ABSTRACT:
A noise barrier system having support members and noise absorbing panels is disclosed. The noise absorbing panels include a front corrugated perforated sheet and a rear corrugated solid sheet which define a chamber. A central sinusoidally corrugated perforated sheet is provided within the chamber. A first blanket of low frequency noise absorbing material is disposed adjacent the front face of the central member and is configured so that a resonance zone is provided between the first blanket and the rear surface of the front sheet. A second blanket of higher frequency sound absorbing material is provided between the rear surface of the central member and the front surface of the rear sheet.
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McKeown Patrick D.
Neiger Jack W.
Cyclops Corporation
Murtagh John E.
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