US PATENT SUBCLASS 209 / 603
.~.~.~.~ Sheet gauging

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}
552  DF  .~ Condition responsive means controls separating means {13}
600  DF  .~.~ Sensor contacts item {1}
601  DF  .~.~.~ Gauge {3}
603.~.~.~.~ Sheet gauging

DEFINITION

Classification: 209/603

Sheet gauging:

(under subclass 601) Methods and apparatus wherein thickness of a sheet is sensed.

(1) Note. Included here are sensors which detect superposed sheets and control means for separating the latter from single sheets.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

61.13+, for sheet actuated switches.

271, Sheet Feeding or Delivering,

262, and 263 for apparatus sensing excess thickness of articles.