Apparatus and method for conveying amplified sound to ear
Patent 5201007 Issued on April 6, 1993. Estimated Expiration Date: 
March 5, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 5, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2939923 3209082 Vented ear tip for hearing aid and adapter coupler therefore Apparatus and method for conveying amplified sound to the ear Patent #: 5031219 InventorsAssigneeApplicationNo. 656186 filed on 03/05/1991US Classes:381/328, Ear insert181/130, Auditory canal insert181/135, Ear insert381/338With tubular waveguide or resonant elementExaminersPrimary: Ng, Jin F.Assistant: Lefkowitz, Edward Attorney, Agent or FirmInternational ClassH04R 025/00AbstractAn earmold and a method of manufacturing an earmold for a hearing aid that conveys amplified sound from the hearing aid into the ear canal to a closed cavity adjacent the tympanic membrane. The earmold includes an acoustic conduction tube having an external diameter smaller than the ear canal and a flexible flanged tip that exerts negligible pressure on the wall of the canal. One end of the tube is held in place in the canal by the flanged tip. The opposite end of the tube may be positioned in the ear aperture by a fitting in the ear concha that may be integral with the tube. The hearing aid and the earmold leave the canal open preferably to a point past the canal isthmus. | |
