Ear Muffler

Gregory D. Post (Inventor), Jozef J. Zwislocki (Inventor)

Research output: Patent


A passive semi-insert noise reducing device configured for insertion into the ear of a subject includes at least one muffler tube having a closed end and an opposing open end, the muffler tube being configured to be secured to the head of a subject. The at least one muffler tube is defined by an elongate hollow tubular section, including the closed end, and a transverse hollow tube at the open end that is configured for placement in the outer ear of the subject. The at least one muffler tube is defined by a length that produces quarter wave resonance in low audible sound frequencies. A soft sealing member disposed onto an exterior surface of the hollow connecting tube has a distal end surface that is substantially flush with the open end of the muffler tube.
Original languageEnglish (US)
Patent number9,295,585
StatePublished - Mar 17 2016

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  • Cite this

    Post, G. D., & Zwislocki, J. J. (2016). Ear Muffler. (Patent No. 9,295,585).