US PATENT SUBCLASS 209 / 526
.~.~.~.~ Detecting internal flaw (e.g., air bubble, crack, etc.) in wall of item

Current as of: June, 1999
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209 /   HD   CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS

509  DF  SORTING SPECIAL ITEMS, AND CERTAIN METHODS AND APPARATUS (E.G., POCKET TYPE AND LIGHT RESPONSIVE SORTING, ETC.) FOR SORTING ANY ITEMS {11}
522  DF  .~ Sorting bottles, ampoules, jars, drinking vessels, or like ceramic or glass containers {1}
523  DF  .~.~ Condition responsive means controls separating means {3}
524  DF  .~.~.~ Sensing radiant energy reflected, absorbed, emitted, or obstructed by item or adjunct (e.g., label, cap, etc.) thereof {3}
526.~.~.~.~ Detecting internal flaw (e.g., air bubble, crack, etc.) in wall of item {1}
527  DF  .~.~.~.~.~> By means of radio frequency radiation

DEFINITION

Classification: 209/526

Detecting internal flaw (e.g., air bubble, crack, etc.) in wall of item:

(under subclass 524) Methods and apparatus wherein an internal flaw in the wall of an item is sensed.

SEE OR SEARCH CLASS

356, Optics: Measuring and Testing,

237.1+, for flaw inspecting devices, per se.