(under subclass 426) Subject matter wherein the article is a container or receptacle which is tested by means of light transmitted through or reflected from the container or receptacle.
SEE OR SEARCH THIS CLASS, SUBCLASS:
51, for the transmission or reflective testing of containers for flaws or dirt which uses ultraviolet or infrared radiation in addition to visible light.
240.1+, for visual and photoelectric examination of containers for flaws or dirt wherein no rotation of the container is involved.
SEE OR SEARCH CLASS
73, Measuring and Testing,
61.41+, for sediment or foreign content testing where the ratio or amount of the sediment or the foreign content to the liquid would be determined.
209, Classifying, Separating, and Assorting Solids, 524+, for the testing of containers for flaws by the use of visible light and the automatic rejection of the flawed containers as a result of this test.
250, Radiant Energy,
224, for optical or prephotocell systems which include a support for an article to be tested and structure to relatively move the light ray and the article during the test; subclasses 336.1+ for methods and apparatus having an electric signalling device responsive to invisible radiation
for testing articles; and subclasses 453.11+ for supports for irradiated objects.
