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| Number | Title | Issue Date |
| 6658126 | Hearing aid compatible piezoelectric speaker A piezoelectric speaker is provided which provides a magnetic field to couple the speaker to a hearing aid coil. The magnetic field induces a current in the hearing aid coil as it appears as a time varying magnet field to the coil. The time varying magnet... | 12/02/2003 |
| 6633645 | Automatic telephone switch for hearing aid A hearing aid is provided with a switch that automatically switches the hearing aid input from a microphone input to a voice coil input in the presence of a magnetic field. The magnetic field can be generated by a magnet in a telephone handset.... | 10/14/2003 |
| 6603860 | Apparatus and method for monitoring magnetic audio systems An apparatus and method are provided for monitoring magnetic hearing systems by receiving a magnetic hearing system in an acoustic hearing aid testing device and then detecting the magnetic field output by the magnetic hearing system with a magnetic-to-ac... | 08/05/2003 |
| 6516075 | Hearing enhancement system A hearing enhancement system, for co-operation with a conventional hearing aid used in T-switch mode, comprises a microphone (10), an electronics module (22) including an amplifier and a power supply, and an induction loop (12). The induction loop (12) ha... | 02/04/2003 |
| 6320959 | Hearing aid telephone interconnect system A hearing aid telephone interconnect system for permitting hearing impaired persons to use conventional telephone instruments employs a T-coupler adapted to hook over the ear of a user of a conventional behind-the-hear, in-the-ear, or eyeglass hearing aid... | 11/20/2001 |
| 6307945 | Radio-based hearing aid system A personal radio-based hearing aid system is provided. The hearing aid system interfaces with existing hearing aids using the "T" facility. The system comprises a switchable unidirectional or omnidirectional microphone; a line input; and an FM radio trans... | 10/23/2001 |
| 6157728 | Universal self-attaching inductive coupling unit for connecting hearing instrument to peripheral electronic devices An inductive coupling unit which can be easily attached to any hearing instrument with an internal receiving coil to connect the instrument to peripheral electronic devices. The coupling unit includes a head including a head cover, a bobbin disposed insid... | 12/05/2000 |
| 6078675 | Communication system for users of hearing aids Communication system for users of hearing aids in connection with the use of a mobile telephone (1), and where the hearing aid user (5) wears at least one hearing aid (4). The system comprises a headset (3) coupled to the mobile telephone, said headset co... | 06/20/2000 |
| 5991420 | Battery pack with audio coil A battery pack is provided for use with a mobile phone. The battery pack includes audio signal power amplifier circuitry with an inductive coil. The inductive coil boosts the magnetic field strength of the audio signal received by the phone, so that a tel... | 11/23/1999 |
| 5217011 | Method and apparatus for transdermal communication A transdermal communication apparatus and method is disclosed which utilizes a Hall Effect sensor to be implanted within a body and which acts to receive communication transmissions from an externally placed source. The sensor provides improvements relati... | 06/08/1993 |
| 5101435 | Combined microphone and magnetic induction pickup system An ear insertable hearing aid having both a miniature microphone and a magnetic induction pickup which can be used simultaneously or alternately. The invention includes a core for the magnetic induction device that maximizes the surface area usable for se... | 03/31/1992 |
| 5086464 | Telephone headset for the hearing impaired An 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 ... | 02/04/1992 |
| 5010575 | Audio current pick-up device An audio current pick-up device for use with an electric wire 6 carrying an electric current containing audio information comprises a pair of substantially identical magnetic induction coil assemblies 26, 27 disposed in parallel to each other with an axia... | 04/23/1991 |
| 4817607 | Magnetic ossicular replacement prosthesis An ossicular replacement prosthesis containing a magnet in the head of the prosthesis so that when used with a magnetic induction hearing aid having a coil producing a magnetic field, the hearing losses resulting from insertion of the prosthesis and any o... | 04/04/1989 |
| 4489330 | Electromagnetic induction coil antenna The invention relates to an electromagnetic induction coil or antenna device embedded in hearing aids or radio sets for receiving sound signals or carrier signals generated by a primary electromagnetic induction coil which is laid down in the room. A plur... | 12/18/1984 |
| 4354061 | Sensing coil in hearing aid A sensing coil unit for a hearing aid is made up of a sensing coil which is in the form of a cylinder one end of which is heavier than the other end and is floated in the liquid in a sealed container, so that the sensing coil is vertical at all times irre... | 10/12/1982 |
