Power source for a hearing aid
July 30, 2018. 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 3409802 3754182 Electronic timepiece battery potential detecting circuitry Electronic timepiece battery-potential detecting circuit Metal-air depolarized cell having restricted gas passageway Automatic cut-out device Metal-air battery having electrically operated air access vent cover FET Voltage level detecting circuit Voltage detector Charge control circuit InventorsAssigneeApplicationNo. 124948 filed on 07/30/1998US Classes:307/130, Voltage307/140, Power circuit controlled307/150Power packsExaminersPrimary: Fleming, FritzAttorney, Agent or FirmForeign Patent References
International ClassH02J 007/00AbstractA metal-air cell for powering electronic components in a hearing aid device. The metal-air cell has a flex circuit inside containing an anode mixture. The flex circuit comprises a flexible substrate having a cathode electrode area at one end of the substrate, an anode electrode area at another end of the substrate and an electronic components area in between. The flexible substrate is disposed within the housing. The cathode electrode area is near a top surface of the housing, and the anode electrode area is near a bottom surface of the housing and in contact with the anode mixture. The cathode electrode area has air flow means for permitting air into the housing. An isolation means between the cathode electrode area and the anode mixture is provided for preventing contact between the cathode electrode area and the anode mixture.Field of SearchBattery protectionVoltage Electrical Power circuit controlled Condition responsive Power packs Undervoltage With battery or cell condition monitoring (e.g., for protection from overcharging, heating, etc.) With battery or cell condition monitoring (e.g., for protection from overcharging, heating, etc.) Active material electrode-type cell or subcombination thereof Having switch or interlock means | |
