Patents by Inventor Clay Allison

Clay Allison 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).

  • Low-frequency spiral waveguide speaker
    Patent number: 11317178
    Abstract: A low-frequency loudspeaker is provided comprising an enclosure having a front, a back and a sidewall. An audio speaker is mounted in an opening in the front of the enclosure. The audio speaker has a diaphragm for producing front sound waves that are transmitted outwardly from the diaphragm and back sound waves that are transmitted into the enclosure from the diaphragm. A spiral waveguide is positioned within the enclosure. The spiral waveguide has a first end proximal to the speaker diaphragm for receiving the back sound waves and extends outwardly therefrom in a spiral pattern to a second end that forms a low-frequency terminus exit port opening in the sidewall.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: April 26, 2022
    Inventor: Clay Allison
  • LOW-FREQUENCY SPIRAL WAVEGUIDE SPEAKER
    Publication number: 20210014586
    Abstract: A low-frequency loudspeaker is provided comprising an enclosure having a front, a back and a sidewall. An audio speaker is mounted in an opening in the front of the enclosure. The audio speaker has a diaphragm for producing front sound waves that are transmitted outwardly from the diaphragm and back sound waves that are transmitted into the enclosure from the diaphragm. A spiral waveguide is positioned within the enclosure. The spiral waveguide has a first end proximal to the speaker diaphragm for receiving the back sound waves and extends outwardly therefrom in a spiral pattern to a second end that forms a low-frequency terminus exit port opening in the sidewall.
    Type: Application
    Filed: July 9, 2020
    Publication date: January 14, 2021
    Inventor: Clay Allison
  • Knife sharpener
    Patent number: D1138634
    Type: Grant
    Filed: January 15, 2025
    Date of Patent: August 4, 2026
    Assignee: HollowPoint, LLC
    Inventors: Clay Allison, Branden Baca, Thomas Goth, Ian Goth, Philip M. Blank