Patents by Inventor Peter John Trigg

Peter John Trigg 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).

  • Testing articles
    Patent number: 3968681
    Abstract: The testing of an article for deviations thereof from an optimum thickness range includes scanning the article by means of a thickness measuring device; making a plurality of thickness measurements of the article during each scan; averaging successive groups of a predetermined number of theoretical measurements during each scan; comparing the averages so obtained with predetermined desired averages and marking a visual record with symbols indicative of whether each group is within, greater than, or less than the desired average.
    Type: Grant
    Filed: June 12, 1974
    Date of Patent: July 13, 1976
    Assignee: The British Steel Corporation
    Inventors: Alexander Rankin Cornforth, Peter John Trigg