Telephone headset for the hearing impaired
Patent 5086464 Issued on February 4, 1992. Estimated Expiration Date: 
March 5, 2010. 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, 2010. 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 2554834 2837607 3396245 Hearing aid Differential hearing aid with programmable frequency response Earpiece, telephone handset and headphone intended to correct individual hearing deficiencies Hearing aid headband support Audio current pick-up device Patent #: 5010575 InventorAssigneeApplicationNo. 487846 filed on 03/05/1990US Classes:381/331, Inductive pickup2/171, HEAD COVERINGS379/52, INCLUDING AID FOR HANDICAPPED USER (E.G., VISUAL, TACTILE, HEARING AID COUPLING)379/419, TERMINAL379/430, Body supported (e.g., headgear)381/322Specified casing or housingExaminersPrimary: Dwyer, James L.Assistant: Cumming, William Attorney, Agent or FirmForeign Patent References
International ClassesH04M 001/00H04M 011/00 H04R 025/00 A42B 000/00 AbstractAn adjustable telephone headset for the hearing impaired comprising a left and a right ear piece, a speaker within each ear piece, an input device, such as a microphone or magnetic induction pickup within one of the ear pieces, and an amplifier connected between the input device and the speaker. Optionally, a switch may select between either a microphone or a magnetic induction pickup as the choice of input device. A wearer of the headset may place a telephone receiver against the microphone or magnetic induction pickup, allowing an amplified telephone conversation to be heard by both ears. Independent volume controls for each speaker allow individual adjustment to compensate for variations in hearing loss, and optional tone controls for each speaker similarly allow optimum compensation for differences in tonal response in the wearer's ears. An optional remote microphone allows use as a conventional hearing aid when not engaged in telephone conversation.Other References
Field of SearchINCLUDING AID FOR HANDICAPPED USER (E.G., VISUAL, TACTILE, HEARING AID COUPLING)Body supported (e.g., headgear) TERMINAL ACCESSORY OR AUXILIARY EQUIPMENT Including coupler (e.g., inductive) MISCELLANEOUS TERMINAL STETHOSCOPES, ELECTRICAL ELECTRO-ACOUSTIC AUDIO TRANSDUCER Plural or compound reproducers HEAD COVERINGS | |
