Francis X Gradich

age ~75

from Elizabeth, PA

Also known as:
  • Nellie J Gradich
  • Francis F Gradich
  • Nellie Jo Gradich
  • Fran X Gradich
  • Frank Gradich
  • Nellie H
Phone and address:
322 Lincoln Hall Rd, Elizabeth, PA 15037

Francis Gradich Phones & Addresses

  • 322 Lincoln Hall Rd, Elizabeth, PA 15037 • (412)7511612
  • McKeesport, PA
  • Buena Vista, PA
  • 322 Lincoln Hall Rd, Elizabeth, PA 15037 • (215)4770547


  • Position:
    Protective Service Occupations


  • Degree:
    High school graduate or higher

Us Patents

  • Optical Profilometry System For Tubular Products

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  • US Patent:
    47258837, Feb 16, 1988
  • Filed:
    Jul 18, 1986
  • Appl. No.:
  • Inventors:
    William G. Clark - Murrysville PA
    Lee W. Burtner - Elizabeth PA
    Francis X. Gradich - Elizabeth PA
  • Assignee:
    Westinghouse Electric Corp. - Pittsburgh PA
  • International Classification:
    H04N 718
  • US Classification:
  • Abstract:
    An optical inspection system for tubular products utilizes a feeler for engaging the internal surface of the tube to be inspected and a miniature charge coupled device video camera for viewing the interface between the feeler and the tube. An image processing computer responsive to the output of the video camera produces information for rapidly assessing damage or distortion of the tube. The camera is pulled or pushed through the tube while continuously monitoring the optical contrast between the feeler and the tube wall. The camera image of the tube ID is fed to the image processing computer to determine and record changes in ID contour is a function of the axial position of the camera and feeler. These data in turn can be used in tubing life prediction considerations. The data may be analyzed manually if desired.


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