Patents by Inventor Ian Chalmers

Ian Chalmers 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).

  • Method and apparatus for testing of shear stiffness in board
    Patent number: 7621187
    Abstract: A method and apparatus for testing shear stiffness in board is disclosed. The board sample (6) is placed into stationary jaw (2) and jaw (3) which is rigidly connected to inertial mass (7). The mass (7) is twisted around the sample axis with an initial twist chosen to ensure the sample is within the elastic region, and then allowed to freely oscillate. The oscillation frequency is then measured to evaluate the torsional stiffness of the sample.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: November 24, 2009
    Assignee: Korutest Limited
    Inventor: Ian Chalmers
  • Method and Apparatus for Testing of Shear Stiffness in Board
    Publication number: 20080276720
    Abstract: A method and apparatus for testing shear stiffness in board is disclosed. The board sample (6) is placed into stationary jaw (2) and jaw (3) which is rigidly connected to inertial mass (7). The mass (7) is twisted around the sample axis with an initial twist chosen to ensure the sample is within the elastic region, and then allowed to freely oscillate. The oscillation frequency is then measured to evaluate the torsional stiffness of the sample.
    Type: Application
    Filed: August 19, 2005
    Publication date: November 13, 2008
    Inventor: Ian Chalmers