Acoustically lagged structure
AssigneeImperial Chemical Industries PLC
InventorJames B. Erskine
Life of this patent
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Abstract
An acoustically lagged structure with improved low frequency attenuation has acoustic lagging in the form of a fibrous blanket provided with an external cladding skin held in spaced relationship from the component, e.g. pipe, to be lagged by spacing members. The blanket and/or spacing members are resilient to avoid mechanical close coupling of the skin and component.
Claims10
An acoustically lagged structure comprising an imperforate component that is to be lagged, a blanket of fibrous sound absorbing material supported by said component and spaced therefrom by a plurality of spacing members disposed at intervals along the length of the component, and a skin of material having a greater density than said blanket on the surface of the blanket remote from said component, at least one of (a) said spacing members and (b) said blanket being resilient, and there being no direct fastening of the skin to the component or to the spacing members where the latter are not resilient, so that the skin is not close coupled to said component.
Dependencies are inferred from the claim text.