Patents by Inventor Matthew J. Roberts
Matthew J. Roberts 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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Publication number: 20240106252Abstract: A portable power unit includes a base module, a pair of wheels coupled to the base module, and a main core battery disposed in the base module. A portable charger is removably coupled to the base module and includes a charger core battery, a battery receptacle electrically coupled to the charger core battery and configured to mechanically and electrically couple to a battery pack, and a cover movable to selectively allow access to the battery receptacle. The main core battery is electrically couplable with the charger core battery or the battery receptacle.Type: ApplicationFiled: September 26, 2023Publication date: March 28, 2024Inventors: Christopher S. Spaulding, Colin J. Roberts, Isabel M. Lloyd, Matthew N. Thurin, Ameya Sanjay Kulkarni, Brandon L. Yahr, Shreyas Sridar, Seamus J. Herson
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Patent number: 6831987Abstract: A microphone capsule for an in-the-ear hearing aid is disclosed. The capsule can include a top plate having first and second spaced openings defining front and rear sound inlets, and a directional microphone cartridge enclosing a diaphragm. The diaphragm is oriented generally perpendicular to the top plate and divides the directional microphone cartridge housing into a front chamber and a rear chamber. A front sound passage communicates between the front sound inlet and the front chamber, and a rear sound passage communicates between the rear sound inlet and the rear chamber. Front and rear acoustic damping resistors are associated with the front and rear sound passages. The acoustic resistor pair provides a selected time delay, such as about 4 microseconds, between the front and rear sound passages. The use of two acoustic resistors instead of one levels the frequency response, compared to the frequency response provided by a rear acoustic damping resistor alone.Type: GrantFiled: May 19, 2003Date of Patent: December 14, 2004Assignee: Etymotic Research, Inc.Inventors: Mead C. Killion, Jonathan Stewart, Don Wilson, Matthew J. Roberts, Steve Iseberg, Timothy S. Monroe
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Publication number: 20030198359Abstract: A microphone capsule for an in-the-ear hearing aid is disclosed. The capsule can include a top plate having first and second spaced openings defining front and rear sound inlets, and a directional microphone cartridge enclosing a diaphragm. The diaphragm is oriented generally perpendicular to the top plate and divides the directional microphone cartridge housing into a front chamber and a rear chamber. A front sound passage communicates between the front sound inlet and the front chamber, and a rear sound passage communicates between the rear sound inlet and the rear chamber. Front and rear acoustic damping resistors are associated with the front and rear sound passages. The acoustic resistor pair provides a selected time delay, such as about 4 microseconds, between the front and rear sound passages. The use of two acoustic resistors instead of one levels the frequency response, compared to the frequency fesponse provided by a rear acoustic damping resistor alone.Type: ApplicationFiled: May 19, 2003Publication date: October 23, 2003Inventors: Mead C. Killion, Jonathan Stewart, Don Wilson, Matthew J. Roberts, Steve Iseberg, Timothy S. Monroe
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Patent number: 6567526Abstract: A microphone capsule for an in-the-ear hearing aid is disclosed. The capsule can include a top plate having first and second spaced openings defining front and rear sound inlets, and a directional microphone cartridge enclosing a diaphragm. The diaphragm is oriented generally perpendicular to the top plate and divides the directional microphone cartridge housing into a front chamber and a rear chamber. A front sound passage communicates between the front sound inlet and the front chamber, and a rear sound passage communicates between the rear sound inlet and the rear chamber. Front and rear acoustic damping resistors are associated with the front and rear sound passages. The acoustic resistor pair provides a selected time delay, such as about 4 microseconds, between the front and rear sound passages. The use of two acoustic resistors instead of one levels the frequency response, compared to the frequency response provided by a rear acoustic damping resistor alone.Type: GrantFiled: October 13, 2000Date of Patent: May 20, 2003Assignee: Etymotic Research, Inc.Inventors: Mead C. Killion, Jonathan Stewart, Don Wilson, Matthew J. Roberts, Steve Iseberg, Timothy S. Monroe
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Patent number: 6285771Abstract: A microphone capsule for an in-the-ear hearing aid is disclosed. The capsule can include a top plate having first and second spaced openings defining front and rear sound inlets, and a directional microphone cartridge enclosing a diaphragm. The diaphragm is oriented generally perpendicular to the top plate and divides the directional microphone cartridge housing into a front chamber and a rear chamber. A front sound passage communicates between the front sound inlet and the front chamber, and a rear sound passage communicates between the rear sound inlet and the rear chamber. Front and rear acoustic damping resistors are associated with the front and rear sound passages. The acoustic resistor pair provides a selected time delay, such as about 4 microseconds, between the front and rear sound passages. The use of two acoustic resistors instead of one levels the frequency response, compared to the frequency response provided by a rear acoustic damping resistor alone.Type: GrantFiled: October 13, 2000Date of Patent: September 4, 2001Assignee: Etymotic Research Inc.Inventors: Mead C. Killion, Jonathan Stewart, Don Wilson, Matthew J. Roberts, Steve Iseberg, Timothy S. Monroe
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Patent number: 6134334Abstract: A microphone capsule for an in-the-ear hearing aid is disclosed. The capsule can include a top plate having first and second spaced openings defining front and rear sound inlets, and a directional microphone cartridge enclosing a diaphragm. The diaphragm is oriented generally perpendicular to the top plate and divides the directional microphone cartridge housing into a front chamber and a rear chamber. A front sound passage communicates between the front sound inlet and the front chamber, and a rear sound passage communicates between the rear sound inlet and the rear chamber. Front and rear acoustic damping resistors are associated with the front and rear sound passages. The acoustic resistor pair provides a selected time delay, such as about 4 microseconds, between the front and rear sound passages. The use of two acoustic resistors instead of one levels the frequency response, compared to the frequency response provided by a rear acoustic damping resistor alone.Type: GrantFiled: January 7, 2000Date of Patent: October 17, 2000Assignee: Etymotic Research Inc.Inventors: Mead C. Killion, Jonathan Stewart, Don Wilson, Matthew J. Roberts, Steve Iseberg, Timothy S. Monroe
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Patent number: 6075869Abstract: A microphone capsule for an in-the-ear hearing aid is disclosed. The capsule can include a top plate having first and second spaced openings defining front and rear sound inlets, and a directional microphone cartridge enclosing a diaphragm. The diaphragm is oriented generally perpendicular to the top plate and divides the directional microphone cartridge housing into a front chamber and a rear chamber. A front sound passage communicates between the front sound inlet and the front chamber, and a rear sound passage communicates between the rear sound inlet and the rear chamber. Front and rear acoustic damping resistors having different resistance values are associated with the front and rear sound passages. The acoustic resistor pair provides a selected time delay, such as about 4 microseconds, between the front and rear sound passages. The use of two acoustic resistors instead of one levels the frequency response, compared to the frequency response provided by a rear acoustic damping resistor alone.Type: GrantFiled: October 2, 1998Date of Patent: June 13, 2000Assignee: Etymotic Research, Inc.Inventors: Mead C. Killion, Jonathan Stewart, Don Wilson, Matthew J. Roberts, Steve Iseberg, Timothy S. Monroe
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Patent number: 5878147Abstract: A microphone capsule for an in-the-ear hearing aid is disclosed. The capsule can include a top plate having first and second spaced openings defining front and rear sound inlets, and a directional microphone cartridge enclosing a diaphragm. The diaphragm is oriented generally perpendicular to the top plate and divides the directional microphone cartridge housing into a front chamber and a rear chamber. A front sound passage communicates between the front sound inlet and the front chamber, and a rear sound passage communicates between the rear sound inlet and the rear chamber. Front and rear acoustic damping resistors having different resistance values are associated with the front and rear sound passages. The acoustic resistor pair provides a selected time delay, such as about 4 microseconds, between the front and rear sound passages. The use of two acoustic resistors instead of one levels the frequency response, compared to the frequency response provided by a rear acoustic damping resistor alone.Type: GrantFiled: December 31, 1996Date of Patent: March 2, 1999Assignee: Etymotic Research, Inc.Inventors: Mead C. Killion, Jonathan Stewart, Don Wilson, Matthew J. Roberts, Steve Iseberg, Timothy S. Monroe