Patents Assigned to Protronic AB
  • Method and a device for detecting leakage of a tube section
    Patent number: 4663962
    Abstract: A device for detecting leakage of a tube section communicating with atmosphere at a first end comprises gas filling and flow measuring apparatus for filling the tube section from a second end with a known gas. Pump apparatus is arranged for conveying the resulting gas contents between the ends back towards and through the second end. Gas concentration measuring and recording apparatus is located at the second end for recording the concentration of the known gas in the gas contents with respect to time.
    Type: Grant
    Filed: March 25, 1986
    Date of Patent: May 12, 1987
    Assignee: Protronic AB
    Inventor: Leif Tagesson