Patents Assigned to Proceq SA
  • Patent number: 4034603
    Abstract: A method of, and apparatus for, testing the hardness of a material by means of an impact device wherein an impact body having a test tip or point which is either integrated, e.g., connected with, or separate from, the impact body is brought to impact against the material to be tested. There is determined the velocity of the impact body and/or the test tip both directly before and after impact, and there is then formed a characteristic value from both velocities which is utilized as criterion for the hardness of the material.
    Type: Grant
    Filed: July 9, 1976
    Date of Patent: July 12, 1977
    Assignee: Proceq SA
    Inventors: Dietmar Leeb, Marco Brandestini