Sound attenuating gas conduit

Claim 1

IN A SOUND ATTENUATING GAS CONDUIT FOR CONVEYING, AND ATTENUATING THE NOISE LEVEL, OF A MOVING GAS STREAM, AN ELONGATED CONDUIT FORMING A GAS-FLOW PASSAGE, ONE OR MORE AXIALLY EXTENDING CLOSED END PIPE SECTIONS FIXEDLY INTERCONNECTED TO THE OUTER WALL OF SAID CONDUIT ALONG AXIALLY EXTENDING LINES OF INTERCONNECTION EQUAL TO SUBSTANTIALLY THE ENTIRE AXIAL EXTENTS OF SAID PIPE SECTIONS AND EACH FORMING A RESONATOR VOLUME, SAID CONDUIT AND PIPE SECTIONS BEING INETERCONNECTED IN CLOSE PROXIMATE RELATIONSHIP WITH EACH OTHER, AND MEANS SECURED TO THE OUTER WALLS OF SAID CONDUIT AND PIPE SECTIONS IN OPERATIVE ASSOCIATION WITH OPENINGS FORMED THEREIN TO FORM A RESONATOR THROAT INTERCONNECTING EACH OF SAID VOLUMES WITH SAID GAS-FLOW PASSAGE WHEREBY EACH OF SAID THROATS AND VOLUMES WILL ATTENUATE THE NOISE LEVEL OF THE GAS STREAM MOVING THROUGH SAID GAS-FLOW PASSAGE.