Earpiece for insertion in an ear canal, and an earphone, microphone, and earphone/microphone combination comprising the same
Patent 5298692 Issued on March 29, 1994. Estimated Expiration Date: 
November 4, 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.
November 4, 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 ReferencesCoupling to a bone-anchored hearing aid Earpiece for a telephone headset Earplug for noise protected communication between the user of the earplug and surroundings Apparatus and method for conveying amplified sound to the ear Intra-concha type electroacoustic transducer for use with audio devices etc. Patent #: 5142587 InventorsAssigneeApplicationNo. 787225 filed on 11/04/1991US Classes:181/135, Ear insert181/137, Receiver381/375, And microphone381/380Ear insert or bone conductionExaminersPrimary: Gellner, Michael L.Assistant: Dang, Khanh Attorney, Agent or FirmForeign Patent References
International ClassesA61B 007/02H04R 025/00 Foreign Application Priority Data1990-11-09 JPAbstractAn earpiece for insertion in an ear canal as a part of an earphone, an ear mounted microphone, an earphone/microphone combination or the like. The earpiece comprises a body part suitable for housing an earphone transducer and/or a solid vibration pickup, and a canal insert joined to the body part. Having a generally elongate shape, the canal insert has a rear portion joined directly to the body part, a front portion away from the body part, and a midportion through which the rear and the front portions are joined together. The front portion and midportion of the canal insert have their cross sectional dimensions determined in a predefined relationship to fit as closely as feasible in the ear canals of a majority of people. The earpiece may be provided with a stabilizer, as in the form of a contact piece or pieces projecting laterally therefrom, for greater stability against dislodgement from the ear canal or rotational displacement therein. There are also disclosed herein earphones, microphones, and earphone/microphone combinations including the earpiece. | |
