Patents by Inventor Ian R. McLean

Ian R. McLean 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).

  • Variably tuned Helmholtz resonator with linear response controller
    Patent number: 5771851
    Abstract: A variably tuned Helmholtz resonator which has a connection establishing fluid communication between fixed volume chamber and a duct of an induction system for an internal combustion engine. The tubular connection has a special configuration which affects changes in open area and length of the tubular connection so as to create a linear relationship between the resonant frequency and the angular position of the tuning plate. The tuning plate is positioned correspondingly to engine speed to provide noise attenuation over a wide range of engine speeds.
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: June 30, 1998
    Assignee: Siemens Electric Limited
    Inventor: Ian R. McLean