US PATENT SUBCLASS 209 / 536
.~.~ Sensing radiant energy reflected, absorbed, emitted, or obstructed by item or adjunct thereof

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}
535  DF  .~ Sorting cigarettes, cigars, or packages thereof {2}
536.~.~ Sensing radiant energy reflected, absorbed, emitted, or obstructed by item or adjunct thereof

DEFINITION

Classification: 209/536

Sensing radiant energy reflected, absorbed, emitted, or obstructed by item or adjunct thereof:

(under subclass 535) Methods and apparatus including means utilizing radiant energy reflected, absorbed, emitted, or obstructed by an item, or by an article associated therewith, for sensing a condition of said item or article and controlling separating means in accordance therewith.

SEE OR SEARCH CLASS

250, Radiant Energy,

223+, and 226 for a conveyor-carried article sensed by a photodetector, the latter subclass specifically including color detectors.

356, Optics: Measuring and Testing,

402+, for color detecting apparatus and methods; subclasses 432+ for apparatus sensing light transmitted or absorbed by articles; and subclasses 445+ for apparatus sensing reflected light.