Patents by Inventor Bernard John Ince

Bernard John Ince 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).

  • Hardness tester
    Patent number: 4040291
    Abstract: A method of measuring surface hardness combining the techniques of Brinell Hardness testing and air-gauging by providing a hard penetrator member having in it a passage and apertures through which air under pressure is passed. The hardness of a work piece is measured by measuring the effect on air pressure caused by occlusion of the apertures as the penetrator is pressed into a specimen of which the hardness is to be measured.
    Type: Grant
    Filed: February 10, 1976
    Date of Patent: August 9, 1977
    Assignee: Girlock Limited of Belmore
    Inventor: Bernard John Ince