Patents by Inventor Michael Thomas Campbell

Michael Thomas Campbell 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).

  • Hybrid acoustic silencer
    Patent number: 11143071
    Abstract: A hybrid acoustic silencer for a motor vehicle includes an insertion loss layer tuned for good insertion loss properties at specific frequencies and an absorption layer tuned for good absorption properties at specific frequencies. The insertion loss layer is configured to be adjacent to a sound radiating surface of the motor vehicle and the absorption layer is configured to face outward from the sound radiating surface of the motor vehicle.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: October 12, 2021
    Assignee: Cascade Engineering, Inc.
    Inventors: Andrew Skestone, Michael Thomas Campbell
  • HYBRID ACOUSTIC SILENCER
    Publication number: 20200332688
    Abstract: A hybrid acoustic silencer for a motor vehicle includes an insertion loss layer tuned for good insertion loss properties at specific frequencies and an absorption layer tuned for good absorption properties at specific frequencies. The insertion loss layer is configured to be adjacent to a sound radiating surface of the motor vehicle and the absorption layer is configured to face outward from the sound radiating surface of the motor vehicle.
    Type: Application
    Filed: April 19, 2019
    Publication date: October 22, 2020
    Inventors: Andrew Skestone, Michael Thomas Campbell