Acoustical apparatus

F - Mech Eng,Light,Heat,Weapons – 01 – N

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172/22

F01N 1/00 (2006.01) E03F 7/00 (2006.01) F24F 13/24 (2006.01) G10K 11/16 (2006.01)

Patent

CA 1079197

ACOUSTICAL APPARATUS ABSTRACT OF THE DISCLOSURE An apparatus for reducing acoustical pressure in a tubing is disclosed comprising a first molded plastic member having a first support with an orifice extending therethrough and having a first side forming a substantially saucer shaped member, A plurality of first walls are molded into the first member to extend from the first support radially spaced about the orifice and interposed between the orifice and the first side. A second molded plastic member, which is smaller than the first member, includes a second support and a second side, A plurality of second walls extend from the second support radi- ally spaced and interposed between the center of the second sup- port and the second side. A tubing having acoustical pressure is receivable in the orifice of the first member, The first and second members are mounted to one another forming a labyrinth passage between the orifice and the first and second sides of the first and second members. -1-

281456

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