Patents by Inventor Jonathan K. Stewart
Jonathan K. Stewart has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9566023Abstract: The present technology relates to an earphone apparatus adapted for use in audiometry examinations. The earphone apparatus comprises a housing and a receiver having an acoustic output adapted to connect with an audio signal source. The earphone apparatus can also include a circuit board with an electrical equalization network connected to the receiver. A coupling can be connected to the acoustic output of the receiver. A sound tube can be connected to the acoustic output and extends out from the housing to an ear piece. The earphone also includes a resonance cancellation assembly comprising a damping chamber and a tubing section acoustically connecting the damping chamber to the coupling. The damping chamber can provide an acoustic compliance to the sound delivered by the receiver. The earphone can also comprise an electrical connector with a protector that is adapted to connect with a female connector delivering electrical power.Type: GrantFiled: October 8, 2014Date of Patent: February 14, 2017Assignee: ETYMOTIC RESEARCH, INC.Inventors: Mead C. Killion, Charles J. Aldous, Viorel Drambarean, Donald Wilson, Jonathan K. Stewart
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Publication number: 20150096379Abstract: The present technology relates to an earphone apparatus adapted for use in audiometry examinations. The earphone apparatus comprises a housing and a receiver having an acoustic output adapted to connect with an audio signal source. The earphone apparatus can also include a circuit board with an electrical equalization network connected to the receiver. A coupling can be connected to the acoustic output of the receiver. A sound tube can be connected to the acoustic output and extends out from the housing to an ear piece. The earphone also includes a resonance cancellation assembly comprising a damping chamber and a tubing section acoustically connecting the damping chamber to the coupling. The damping chamber can provide an acoustic compliance to the sound delivered by the receiver. The earphone can also comprise an electrical connector with a protector that is adapted to connect with a female connector delivering electrical power.Type: ApplicationFiled: October 8, 2014Publication date: April 9, 2015Inventors: Mead C. Killion, Charles J. Aldous, Viorel Drambarean, Donald Wilson, Jonathan K. Stewart
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Patent number: 8625827Abstract: A hearing-aid device comprising a housing and circuitry module, wherein the circuitry module comprises a battery, a microphone, and a receiver, and the circuit module is inserted in the hearing aid housing. The hearing aid device further comprises a retractable battery sleeve, wherein a battery slot is exposed when the battery sleeve is retracted, and a battery can be inserted into the battery slot from either side of the battery slot with either polarity. The hearing aid housing may comprise an ear-tip, wherein a microphone is mounted in the hearing aid housing near the ear-tip and the microphone receives sounds through at least one sound inlet located on a side surface of the hearing aid housing. The ear-tip additionally comprises three flanges decreasing in size toward the flange closest to the ear canal, and the hearing aid can be inserted into the ear canal in any orientation.Type: GrantFiled: April 26, 2012Date of Patent: January 7, 2014Assignee: Etymotic Research, Inc.Inventors: Gail Gudmundsen, Viorel Drambarean, Mead C. Killion, Jonathan K. Stewart
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Publication number: 20120213396Abstract: A hearing-aid device comprising a housing and circuitry module, wherein the circuitry module comprises a battery, a microphone, and a receiver, and the circuit module is inserted in the hearing aid housing. The hearing aid device further comprises a retractable battery sleeve, wherein a battery slot is exposed when the battery sleeve is retracted, and a battery can be inserted into the battery slot from either side of the battery slot with either polarity. The hearing aid housing may comprise an ear-tip, wherein a microphone is mounted in the hearing aid housing near the ear-tip and the microphone receives sounds through at least one sound inlet located on a side surface of the hearing aid housing. The ear-tip additionally comprises three flanges decreasing in size toward the flange closest to the ear canal, and the hearing aid can be inserted into the ear canal in any orientation.Type: ApplicationFiled: April 26, 2012Publication date: August 23, 2012Applicant: ETYMOTIC RESEARCH, INC.Inventors: Gail Gudmundsen, Viorel Drambarean, Mead C. Killion, Jonathan K. Stewart
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Patent number: 8184839Abstract: A hearing-aid device comprising a housing and circuitry module, wherein the circuitry module comprises a battery, a microphone, and a receiver, and the circuit module is inserted in the hearing aid housing. The hearing aid device further comprises a retractable battery sleeve, wherein a battery slot is exposed when the battery sleeve is retracted, and a battery can be inserted into the battery slot from either side of the battery slot with either polarity. The hearing aid housing may comprise an ear-tip, wherein a microphone is mounted in the hearing aid housing near the ear-tip and the microphone receives sounds through at least one sound inlet located on a side surface of the hearing aid housing. The ear-tip additionally comprises three flanges decreasing in size toward the flange closest to the ear canal, and the hearing aid can be inserted into the ear canal in any orientation.Type: GrantFiled: January 7, 2005Date of Patent: May 22, 2012Assignee: Etymotic Research, Inc.Inventors: Gail Gudmundsen, Mead C. Killion, Viorel Drambarean, Jonathan K. Stewart
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Patent number: 7551940Abstract: A two-way voice communication device which provides a high-level of acoustic noise reduction is disclosed. A resilient ear tip provides acoustic isolation and secures the earphone within the ear canal of the user. The ability to rotate the earphone within the ear canal allows the user to easily position an attached microphone. The audio signals may be conveyed by an included radio frequency receiver and radio frequency transmitter, or the earphone may be connected to an electrical audio device using a multi-conductor cable. Audio signals may be conveyed to one or both ears of a user. A switch to mute the audio signal from the microphone, or for supporting a push-to-talk mode of operation, may be included in the earphone housing, or on the cable.Type: GrantFiled: January 8, 2004Date of Patent: June 23, 2009Assignee: Etymotic Research, Inc.Inventors: Mary Paulson, Jonathan K. Stewart, Andrew J. Haapapuro, Viorel Drambarean, Robert B. Schulein, Mead C. Killion
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Publication number: 20040165720Abstract: A two-way voice communication device which provides a high-level of acoustic noise reduction is disclosed. A resilient ear tip provides acoustic isolation and secures the earphone within the ear canal of the user. The ability to rotate the earphone within the ear canal allows the user to easily position an attached microphone. The audio signals may be conveyed by an included radio frequency receiver and radio frequency transmitter, or the earphone may be connected to an electrical audio device using a multi-conductor cable. Audio signals may be conveyed to one or both ears of a user. A switch to mute the audio signal from the microphone, or for supporting a push-to-talk mode of operation, may be included in the earphone housing, or on the cable.Type: ApplicationFiled: January 8, 2004Publication date: August 26, 2004Inventors: Mary Paulson, Jonathan K. Stewart, Andrew J. Haapapuro, Viorel Drambarean, Robert B. Schulein, Mead C. Killion
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Patent number: 5661420Abstract: A power supply circuit is set forth which overcomes the problems associated with incorrect battery insertion. The power supply circuit includes first and second battery terminals for electrical connection to the battery. The first and second battery terminals are connected to a first transistor switching circuit. The first transistor switching circuit is responsive to power from the battery to through-connect a negative polarity power signal therethrough irrespective of the polarity orientation of the battery. The first and second battery terminals are also connected to a second transistor switching circuit. The second switching circuit is responsive to power from the battery to through-connect a positive polarity power signal therethrough irrespective of polarity orientation of the battery. The negative and positive polarity power signals are available for connection to a load device, such as a hearing aid amplifier.Type: GrantFiled: March 23, 1995Date of Patent: August 26, 1997Assignee: Etymotic Research, Inc.Inventors: Mead Killion, Jonathan K. Stewart
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Patent number: 5131046Abstract: A high fidelity hearing aid amplifier is operable at a very low battery voltage and includes a single integrated circuit chip which provides a variable gain amplifier and gain control circuitry operative at low signal levels to enhance gain at higher frequencies relative to gain at lower frequencies, such circuitry including a logarithmic rectifier arrangement and a peak detector in a compression ratio control circuit. Operation at a low battery voltage is enhanced through a compression ratio control circuit which provides a level shift between an AC output of the logarithmic rectifier arrangement and the peak detector. Current mirrors are provided to obtained balanced and stable operation, and an arrangement is provided for manual control by a user to obtain an optimum response characteristic.Type: GrantFiled: November 3, 1989Date of Patent: July 14, 1992Assignee: Etymotic Research Inc.Inventors: Mead C. Killion, Norman P. Matzen, Clyde M. Brown, Jr., William A. Cole, James B. Compton, Steven J. Iseberg, Jonathan K. Stewart, Donald L. Wilson
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Patent number: 5113967Abstract: An earplug uses damping to render unimportant a Helmholtz resonance between the acoustic mass intrinsic to a sound channel thereof and the compliance of air in the earcanal, in combination with a readily manufacturable external structure coupled to the sound channel to increase response characteristics at higher frequencies in a predictable and well controlled manner in order to provide a highly desireable uniform frequency response.Type: GrantFiled: May 7, 1990Date of Patent: May 19, 1992Assignee: Etymotic Research, Inc.Inventors: Mead C. Killion, Jonathan K. Stewart, Robert Falco, Elliott H. Berger
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Patent number: 5099856Abstract: A system for detecting and transmitting body electrical signals in the presence of ambient electrical interference that uses a transmiter circuit including an amplifier coupled to and in close proximity to two or more body electrodes, a light pulse generator that receives its input from that amplifier and provides a pulse-duration-modulated series of light pulses, and a remote receiver including a transducer which demodulates the transmitted light pulses into electrical pulses of corresponding duration and frequency and a demodulator which accepts those electrical pulses and produces an amplified replica of the original signal developed between the body electrodes, thereby effectively providing complete electrical isolation of the electrode amplifier from the remaining bioelectrical signal analysis equipment.Type: GrantFiled: November 8, 1989Date of Patent: March 31, 1992Assignee: Etymotic Research, Inc.Inventors: Mead C. Killion, Donald L. Wilson, Jonathan K. Stewart