Patents by Inventor John David Kerr

John David Kerr 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: 6736238
    Abstract: A silencer for connection to the air intake of a machine such as a turbocharger compressor. The silencer comprises a housing containing a plurality of axially spaced annular noise attenuating baffles. Each baffle has an outer circumference and an inner circumference defining a central aperture, the central apertures of each baffle collectively defining an axial outlet flow passage to an outlet aperture. The baffles define a series of axially spaced generally annular partial flow passages such that air flowing through the silencer is initially split and then merges into the axial outlet passage. Each of the annular flow passages curves radially inwards from its outer to its inner circumference in a direction towards the axial. Additionally, or alternatively, the dimensions of the annular partial flow passages vary so that the velocity of air flow through the passages is greater for passages closer to the axial outlet aperture.
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: May 18, 2004
    Assignee: Fleetguard, Inc.
    Inventor: John David Kerr
  • Publication number: 20030150671
    Abstract: A silencer for connection to the air intake of a machine such as a turbocharger compressor. The silencer comprises a housing containing a plurality of axially spaced annular noise attenuating baffles. Each baffle has an outer circumference and an inner circumference defining a central aperture, the central apertures of each baffle collectively defining an axial outlet flow passage to an outlet aperture.
    Type: Application
    Filed: May 7, 2001
    Publication date: August 14, 2003
    Inventor: John David Kerr
  • Patent number: D1023009
    Type: Grant
    Filed: May 10, 2022
    Date of Patent: April 16, 2024
    Assignee: Apple Inc.
    Inventors: Jody Akana, Molly Anderson, Bartley K. Andre, Shota Aoyagi, Anthony Michael Ashcroft, John J. Baker, Marine C. Bataille, Jeremy Bataillou, Abidur Rahman Chowdhury, Clara Geneviève Marine Courtaigne, Markus Diebel, Richard Hung Minh Dinh, Christopher E. Glazowski, Jonathan Gomez Garcia, Jean-Pierre S. Guillou, M. Evans Hankey, Matthew David Hill, Julian Hoenig, Richard P. Howarth, Jonathan P. Ive, Julian Jaede, Duncan Robert Kerr, Peter Russell-Clarke, Benjamin Andrew Shaffer, Sung-Ho Tan, Clement Tissandier, Eugene Antony Whang, Rico Zörkendörfer