Patents by Inventor Christopher Bradt

Christopher Bradt 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).

  • Helmholtz-resonator for microphone assembly
    Patent number: 11653143
    Abstract: A sensor assembly includes a housing having an external-device interface and a sound port to an interior to the housing. A transducer and an electrical circuit are disposed within the housing. The transducer is acoustically coupled to the sound port while the electrical circuit is electrically coupled to the transducer and the external-device interface. A cavity is formed in a portion of the sensor assembly. In some embodiments, the portion is a base of the housing of the sensor assembly. In other embodiments, the portion is a sound port adapter coupled to the sensor assembly. In any case, the cavity is acoustically coupled to the interior of the housing via the sound port and includes a wall portion structured to modify an acoustic property of the sensor assembly.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: May 16, 2023
    Assignee: KNOWLES ELECTRONICS, LLC
    Inventors: Christopher Bradt, Usha Murthy, Ben Vondersaar
  • HELMHOLTZ-RESONATOR FOR MICROPHONE ASSEMBLY
    Publication number: 20210204056
    Abstract: A sensor assembly includes a housing having an external-device interface and a sound port to an interior to the housing. A transducer and an electrical circuit are disposed within the housing. The transducer is acoustically coupled to the sound port while the electrical circuit is electrically coupled to the transducer and the external-device interface. A cavity is formed in a portion of the sensor assembly. In some embodiments, the portion is a base of the housing of the sensor assembly. In other embodiments, the portion is a sound port adapter coupled to the sensor assembly. In any case, the cavity is acoustically coupled to the interior of the housing via the sound port and includes a wall portion structured to modify an acoustic property of the sensor assembly.
    Type: Application
    Filed: December 30, 2020
    Publication date: July 1, 2021
    Inventors: Christopher Bradt, Usha Murthy, Ben Vondersaar