Edward F. Schaefer - Tulsa OK Lawrence R. Lozynski - McHenry IL Donald E. Lorenzi - Des Plaines IL
Assignee:
Magnaflux Corporation - Chicago IL
International Classification:
G03B 3700 G01N 2904
US Classification:
354 63
Abstract:
This invention relates to apparatus for photographic inspection of the interior of a pipeline and more particularly to apparatus which includes an optical port wiper which makes it possible to obtain clear and accurate photographs under adverse environmental conditions. The apparatus is highly effective and reliable while being comparatively simple and readily and economically manufacturable.