US PATENT SUBCLASS 493 / 20
.~.~.~.~.~ Opposite side edges

Current as of: June, 1999
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493 /   HD   MANUFACTURING CONTAINER OR TUBE FROM PAPER; OR OTHER MANUFACTURING FROM A SHEET OR WEB

3  DF  CONTROL MEANS ENERGIZED IN RESPONSE TO ACTIVATOR STIMULATED BY CONDITION SENSOR {5}
8  DF  .~ Responsive to work material, the product or means engaging the work material or the product {13}
17  DF  .~.~ By use of plural sensors {1}
18  DF  .~.~.~ Plural interrelated sensors {1}
19  DF  .~.~.~.~ Sensing opposite edges of planar work {1}
20.~.~.~.~.~ Opposite side edges

DEFINITION

Classification: 493/20

Opposite side edges:

(under subclass 19) Method or apparatus wherein the sheet or web workpiece is translated through the apparatus and wherein the detected margins comprise the lateral extent of the sheet or web perpendicular to the direction of movement thereof.