Patents by Inventor James A. Andrews

James A. Andrews 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).

  • Patent number: 12284507
    Abstract: Force transducers for use in electrostatic drivers, including electrostatic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS) (such as reluctance assist drivers (RAD) and permanent magnet crown (PMC) drivers). The electroacoustic drivers having the force transducers can be used at all audio frequencies, including subwoofer frequencies.
    Type: Grant
    Filed: February 21, 2023
    Date of Patent: April 22, 2025
    Assignee: Brane Audio, LLC
    Inventors: Joseph F. Pinkerton, David A. Badger, James A. Andrews, William Martin Lackowski, William Neil Everett
  • Patent number: 12256207
    Abstract: Electroacoustic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS) (such as reluctance assist drivers (RAD) and permanent magnet crown (PMC) drivers). The electroacoustic drivers can be used at all audio frequencies, including subwoofer frequencies. The magnetic negative springs of the electroacoustic drivers can cancel, or partially cancel, the large pressure forces on a sound panel (of an audio speaker) so that substantial subwoofer notes can be efficiently and cost effectively produced in small/portable speakers. The electroacoustic drivers can include a stabilizing/centering mechanism to overcome the destabilizing forces of a MNS that are too large for a voice coil alone to produce.
    Type: Grant
    Filed: September 18, 2020
    Date of Patent: March 18, 2025
    Assignee: Brane Audio, LLC
    Inventors: Joseph F. Pinkerton, David A. Badger, James A. Andrews, William Martin Lackowski, William Neil Everett
  • Publication number: 20240388853
    Abstract: Electroacoustic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS). The magnets of the MNS can be arranged for radial stability and/or to provide for linear magnetic forces. A variable reluctance device can be used to vary the resonant frequency of electroacoustic driver in response to a feedback signal.
    Type: Application
    Filed: May 17, 2023
    Publication date: November 21, 2024
    Applicant: CLEAN ENERGY LABS, LLC
    Inventors: Joseph F. Pinkerton, James A. Andrews, David A. Badger
  • Publication number: 20240388854
    Abstract: Electroacoustic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS). The magnets of the MNS can be arranged for radial stability and/or to provide for linear magnetic forces. A variable reluctance device can be used to vary the resonant frequency of electroacoustic driver in response to a feedback signal.
    Type: Application
    Filed: May 17, 2023
    Publication date: November 21, 2024
    Applicant: CLEAN ENERGY LABS, LLC
    Inventors: Joseph F. Pinkerton, James A. Andrews, David A. Badger
  • Patent number: 12126979
    Abstract: Electroacoustic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS) (such as reluctance assist drivers (RAD) and permanent magnet crown (PMC) drivers). The electroacoustic drivers can be used at all audio frequencies, including subwoofer frequencies. The magnetic negative springs of the electroacoustic drivers can cancel, or partially cancel, the large pressure forces on a sound panel (of an audio speaker) so that substantial subwoofer notes can be efficiently and cost effectively produced in small/portable speakers. The electroacoustic drivers can include a stabilizing/centering mechanism to overcome the destabilizing forces of a MNS that are too large for a voice coil alone to produce.
    Type: Grant
    Filed: February 21, 2023
    Date of Patent: October 22, 2024
    Assignee: Brane Audio, LLC
    Inventors: Joseph F. Pinkerton, David A. Badger, James A. Andrews, William Martin Lackowski, William Neil Everett
  • Publication number: 20240340595
    Abstract: Electroacoustic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS). The MNS has an asymmetrical magnet design so that it can cancel or partially cancel the differential air pressure force that is different between inward and outward movement of a sound panel.
    Type: Application
    Filed: July 18, 2022
    Publication date: October 10, 2024
    Applicant: BRANE AUDIO, LLC
    Inventors: Joseph F. PINKERTON, James A. ANDREWS
  • Patent number: 12003940
    Abstract: Electroacoustic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS) (such as reluctance assist drivers (RAD) and permanent magnet crown (PMC) drivers). The electroacoustic drivers can be used at all audio frequencies, including subwoofer frequencies. The magnetic negative springs of the electroacoustic drivers can cancel, or partially cancel, the large pressure forces on a sound panel (of an audio speaker) so that substantial subwoofer notes can be efficiently and cost effectively produced in small/portable speakers. The electroacoustic drivers can include a stabilizing/centering mechanism to overcome the destabilizing forces of a MNS that are too large for a voice coil alone to produce.
    Type: Grant
    Filed: February 21, 2023
    Date of Patent: June 4, 2024
    Assignee: Brane Audio, LLC
    Inventors: Joseph F. Pinkerton, David A. Badger, James A. Andrews, William Martin Lackowski, William Neil Everett
  • Patent number: 12003943
    Abstract: Electroacoustic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS) (such as reluctance assist drivers (RAD) and permanent magnet crown (PMC) drivers). The electroacoustic drivers can be used at all audio frequencies, including subwoofer frequencies. The magnetic negative springs of the electroacoustic drivers can cancel, or partially cancel, the large pressure forces on a sound panel (of an audio speaker) so that substantial subwoofer notes can be efficiently and cost effectively produced in small/portable speakers. The electroacoustic drivers can include a stabilizing/centering mechanism to overcome the destabilizing forces of a MNS that are too large for a voice coil alone to produce.
    Type: Grant
    Filed: June 15, 2023
    Date of Patent: June 4, 2024
    Assignee: Brane Audio, LLC
    Inventors: Joseph F. Pinkerton, David A. Badger, James A. Andrews, William Martin Lackowski, William Neil Everett
  • Patent number: 12003942
    Abstract: Electroacoustic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS) (such as reluctance assist drivers (RAD) and permanent magnet crown (PMC) drivers). The electroacoustic drivers can be used at all audio frequencies, including subwoofer frequencies. The magnetic negative springs of the electroacoustic drivers can cancel, or partially cancel, the large pressure forces on a sound panel (of an audio speaker) so that substantial subwoofer notes can be efficiently and cost effectively produced in small/portable speakers. The electroacoustic drivers can include a stabilizing/centering mechanism to overcome the destabilizing forces of a MNS that are too large for a voice coil alone to produce.
    Type: Grant
    Filed: February 21, 2023
    Date of Patent: June 4, 2024
    Assignee: Brane Audio, LLC
    Inventors: Joseph F. Pinkerton, David A. Badger, James A. Andrews, William Martin Lackowski, William Neil Everett
  • Patent number: 12003941
    Abstract: Electroacoustic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS) (such as reluctance assist drivers (RAD) and permanent magnet crown (PMC) drivers). The electroacoustic drivers can be used at all audio frequencies, including subwoofer frequencies. The magnetic negative springs of the electroacoustic drivers can cancel, or partially cancel, the large pressure forces on a sound panel (of an audio speaker) so that substantial subwoofer notes can be efficiently and cost effectively produced in small/portable speakers. The electroacoustic drivers can include a stabilizing/centering mechanism to overcome the destabilizing forces of a MNS that are too large for a voice coil alone to produce.
    Type: Grant
    Filed: February 21, 2023
    Date of Patent: June 4, 2024
    Assignee: Brane Audio, LLC
    Inventors: Joseph F. Pinkerton, David A. Badger, James A. Andrews, William Martin Lackowski, William Neil Everett
  • Publication number: 20230345180
    Abstract: Electroacoustic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS) (such as reluctance assist drivers (RAD) and permanent magnet crown (PMC) drivers). The electroacoustic drivers can be used at all audio frequencies, including subwoofer frequencies. The magnetic negative springs of the electroacoustic drivers can cancel, or partially cancel, the large pressure forces on a sound panel (of an audio speaker) so that substantial subwoofer notes can be efficiently and cost effectively produced in small/portable speakers. The electroacoustic drivers can include a stabilizing/centering mechanism to overcome the destabilizing forces of a MNS that are too large for a voice coil alone to produce.
    Type: Application
    Filed: September 18, 2020
    Publication date: October 26, 2023
    Applicant: CLEAN ENERGY LABS, LLC
    Inventors: Joseph F. Pinkerton, David A. Badger, James A. Andrews, William Martin Lackowski, William Neil Everett
  • Publication number: 20230328448
    Abstract: Electroacoustic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS) (such as reluctance assist drivers (RAD) and permanent magnet crown (PMC) drivers). The electroacoustic drivers can be used at all audio frequencies, including subwoofer frequencies. The magnetic negative springs of the electroacoustic drivers can cancel, or partially cancel, the large pressure forces on a sound panel (of an audio speaker) so that substantial subwoofer notes can be efficiently and cost effectively produced in small/portable speakers. The electroacoustic drivers can include a stabilizing/centering mechanism to overcome the destabilizing forces of a MNS that are too large for a voice coil alone to produce.
    Type: Application
    Filed: June 15, 2023
    Publication date: October 12, 2023
    Applicant: CLEAN ENERGY LABS, LLC
    Inventors: Joseph F. Pinkerton, David A. Badger, James A. Andrews, William Martin Lackowski, William Neil Everett
  • Publication number: 20230247364
    Abstract: Electroacoustic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS) (such as reluctance assist drivers (RAD) and permanent magnet crown (PMC) drivers). The electroacoustic drivers can be used at all audio frequencies, including subwoofer frequencies. The magnetic negative springs of the electroacoustic drivers can cancel, or partially cancel, the large pressure forces on a sound panel (of an audio speaker) so that substantial subwoofer notes can be efficiently and cost effectively produced in small/portable speakers. The electroacoustic drivers can include a stabilizing/centering mechanism to overcome the destabilizing forces of a MNS that are too large for a voice coil alone to produce.
    Type: Application
    Filed: February 21, 2023
    Publication date: August 3, 2023
    Applicant: CLEAN ENERGY LABS, LLC
    Inventors: Joseph F. Pinkerton, David A. Badger, James A. Andrews, William Martin Lackowski, William Neil Everett
  • Publication number: 20230217183
    Abstract: Electroacoustic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS) (such as reluctance assist drivers (RAD) and permanent magnet crown (PMC) drivers). The electroacoustic drivers can be used at all audio frequencies, including subwoofer frequencies. The magnetic negative springs of the electroacoustic drivers can cancel, or partially cancel, the large pressure forces on a sound panel (of an audio speaker) so that substantial subwoofer notes can be efficiently and cost effectively produced in small/portable speakers. The electroacoustic drivers can include a stabilizing/centering mechanism to overcome the destabilizing forces of a MNS that are too large for a voice coil alone to produce.
    Type: Application
    Filed: February 21, 2023
    Publication date: July 6, 2023
    Applicant: CLEAN ENERGY LABS, LLC
    Inventors: Joseph F. Pinkerton, David A. Badger, James A. Andrews, William Martin Lackowski, William Neil Everett
  • Publication number: 20230209274
    Abstract: Electroacoustic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS) (such as reluctance assist drivers (RAD) and permanent magnet crown (PMC) drivers). The electroacoustic drivers can be used at all audio frequencies, including subwoofer frequencies. The magnetic negative springs of the electroacoustic drivers can cancel, or partially cancel, the large pressure forces on a sound panel (of an audio speaker) so that substantial subwoofer notes can be efficiently and cost effectively produced in small/portable speakers. The electroacoustic drivers can include a stabilizing/centering mechanism to overcome the destabilizing forces of a MNS that are too large for a voice coil alone to produce.
    Type: Application
    Filed: February 21, 2023
    Publication date: June 29, 2023
    Applicant: CLEAN ENERGY LABS, LLC
    Inventors: Joseph F. Pinkerton, David A. Badger, James A. Andrews, William Martin Lackowski, William Neil Everett
  • Publication number: 20230199401
    Abstract: Force transducers for use in electrostatic drivers, including electrostatic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS) (such as reluctance assist drivers (RAD) and permanent magnet crown (PMC) drivers). The electroacoustic drivers having the force transducers can be used at all audio frequencies, including subwoofer frequencies.
    Type: Application
    Filed: February 21, 2023
    Publication date: June 22, 2023
    Applicant: CLEAN ENERGY LABS, LLC
    Inventors: Joseph F. Pinkerton, David A. Badger, James A. Andrews, William Martin Lackowski, William Neil Everett
  • Publication number: 20230199403
    Abstract: Electroacoustic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS) (such as reluctance assist drivers (RAD) and permanent magnet crown (PMC) drivers). The electroacoustic drivers can be used at all audio frequencies, including subwoofer frequencies. The magnetic negative springs of the electroacoustic drivers can cancel, or partially cancel, the large pressure forces on a sound panel (of an audio speaker) so that substantial subwoofer notes can be efficiently and cost effectively produced in small/portable speakers. The electroacoustic drivers can include a stabilizing/centering mechanism to overcome the destabilizing forces of a MNS that are too large for a voice coil alone to produce.
    Type: Application
    Filed: February 21, 2023
    Publication date: June 22, 2023
    Applicant: CLEAN ENERGY LABS, LLC
    Inventors: Joseph F. Pinkerton, David A. Badger, James A. Andrews, William Martin Lackowski, William Neil Everett
  • Patent number: 11595751
    Abstract: Dipole audio speakers, and more particularly, voice controlled dipole audio speakers having at least one microphone located substantially along the null sound plane of the dipole audio speaker. An improved loudspeaker system that produces an improved audio quality for stereophonic sound. The improved loudspeaker utilizes conventional electro-dynamic drivers in a sealed chamber that produce sound primarily in the 20-300 Hz band coupled with electrostatic card stack drivers placed outside the sealed chamber that cover the remaining 98% of the audio frequency spectrum (300 Hz to 20 kHz). The improved loudspeaker system can also include multiple card stack drivers that are placed at angles with respect to each other to maximize audio fidelity.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: February 28, 2023
    Assignee: Clean Energy Labs, LLC
    Inventors: Joseph F. Pinkerton, David A. Badger, William Martin Lackowski, James A. Andrews
  • Publication number: 20210250680
    Abstract: Dipole audio speakers, and more particularly, voice controlled dipole audio speakers having at least one microphone located substantially along the null sound plane of the dipole audio speaker. An improved loudspeaker system that produces an improved audio quality for stereophonic sound. The improved loudspeaker utilizes conventional electro-dynamic drivers in a sealed chamber that produce sound primarily in the 20-300 Hz band coupled with electrostatic card stack drivers placed outside the sealed chamber that cover the remaining 98% of the audio frequency spectrum (300 Hz to 20 kHz). The improved loudspeaker system can also include multiple card stack drivers that are placed at angles with respect to each other to maximize audio fidelity.
    Type: Application
    Filed: May 2, 2019
    Publication date: August 12, 2021
    Applicant: CLEAN ENERGY LABS, LLC
    Inventors: Joseph F. Pinkerton, David A. Badger, William Martin Lackowski, James A. Andrews
  • Publication number: 20160322881
    Abstract: Provided is a flywheel system, including: an armature coil set; and a rotor assembly having: a first rotor member; a second rotor member; a permanent magnet disposed between the first rotor member and the second rotor member; and a magnetic circuit formed by the first rotor member, the second rotor member, and the permanent magnet, wherein the magnetic circuit spans a gap between the first rotor member and the second rotor member into which at least part of the armature coil set is disposed.
    Type: Application
    Filed: April 29, 2016
    Publication date: November 3, 2016
    Inventor: James A. Andrews