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US Patent RE42490 Device and method for amplifying suction noise

Patent RE42490 was granted and assigned to NISSAN MOTOR CO.,LTD. on June, 2011 by the United States Patent and Trademark Office.

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Patent abstract

A device for amplifying the suction noise of a vehicle is disclosed. The device comprises an intake duct, a connecting pipe and a composite membrane. The intake duct is for feeding air to an engine intake port. A connecting pipe is connected to an interior of the intake duct. The composite membrane is positioned within the connecting pipe. The composite member blocks an interior passage formed in the connecting pipe. The composite member further includes at least two elastic membranes with one of masses and rigidities that different from each other. A method is also disclosed.

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