US 4,276,954 AGranted

Adjustable light and air-admitting window thermal and acoustic barrier system

AssigneeAcoustic Standards

InventorPaul L. Romano

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Abstract

An adjustable light and air-admitting thermal and acoustic barrier has a plurality of sound-attenuating blades pivotally mounted in a frame in a mutually spaced, parallel relationship. When the barrier is mounted at an open window, the blades may be adjusted to various open positions to allow desired amounts of outside light and air into a room, but cooperate in such open positions to form an effective sound trap for annoying outside sounds. Each of the blades functions as both a sound absorber and a sound transmission barrier, and comprises an elongated, relatively thin core of solid, sound-reflective material having longitudinally extending edge and intermediate flanges which define cavities on opposite sides of the core. Secured within the cavities by the flanges are strips of sound-absorbing insulating material, the core and insulating material being laterally enfolded by a cover secured to the flanges. When the blades are in their fully closed position, they form a thermal barrier to reduce heat gain or loss through the window.

Claims5

Dependent claims

An adjustable light and air-admitting thermal and acoustic barrier, comprising a plurality of sound and heat transfer attenuating blades pivotally mounted in longitudinally parallel and mutually spaced apart relation, each said blade comprising:

(a) a self-supporting core of sound reflective material, said core comprising
(1) an elongated web,
(2) generally C-shaped side edge flanges on said web having opposite ends defining laterally inwardly projecting lips on opposite sides of and spaced apart from said web, the lips of opposite side edge flanges extending towards each other substantially parallel to and spaced from the web to define longitudinally extending cavities on opposite sides of the web with the lips of said side edge flanges partially overlying and partially enclosing such cavities,
(3) a plurality of strips of sound-absorbing insulating material positioned in respective ones of said cavities, said lips partly overlying said strips of sound-absorbing insulating material and compressing side edge portions thereof to secure said strips within said cavities, and
(4) a sound-absorbing cover laterally enfolding said core, whereby said strips of sound-absorbing material are readily mounted upon said core and retained in said cavity by the side edge compression thereof.

2 more elements

Dependencies are inferred from the claim text.