Patent ID: 9181695
Filing Date: 2015-11-10
Classification: B32B,E04B,G10K

Abstract:
1. A noise muffler configured to substantially surround a sound generating object where the sound generating object is positioned and attenuate sound emitted from the sound generating object, the noise muffler comprising: front, rear, left and right sides; a bottom connected to each of the front, rear, left and right sides to form a muffler cavity defining an inner volume; wherein the sound generating object is enclosed by the muffler cavity; wherein the front, rear, left and right sides, and the bottom of the muffler are formed with an outer barrier layer; wherein the front, rear, left and right sides, and the bottom of the muffler are formed with a noise absorbing layer adhered to the outer barrier layer to absorb a predetermined amount of sound emitted from the object, reflected back from the barrier layer or both; wherein one side of the front, rear, left and right sides includes a first opening into the inner volume of the muffler cavity; and wherein a size of the first opening is adjustable, wherein the first opening is formed by a first primary flap that is attached to and extending from an end of the one side opposite an other end of the one side that is attached to the bottom and a first secondary flap attached to an inner side wall of the muffler, the first secondary flap disposed opposite the first primary flap and wherein a physical distance separating the first primary flap and the first secondary flap defines a size of the first opening.