Conveyors: power-driven – Conveyor section – Live roll
Reexamination Certificate
2011-03-15
2011-03-15
Deuble, Mark A (Department: 3651)
Conveyors: power-driven
Conveyor section
Live roll
C198S781090
Reexamination Certificate
active
07905345
ABSTRACT:
A drive controller for controlling movement of a plurality of packages by an accumulation conveyor. The drive controller is configured to determine a length of each of the packages and to coordinate driving of a number of zones needed to accommodate the package. For example, a sensor in each of the conveyor zones communicates blockage by the packages to the drive controller. The drive controller determines a sequence of blockage of the sensors in adjacent zones. Blockage of the sensor in an upstream zone before the sensor in a downstream zone indicates an oversized package that extends longer than a zone length of the downstream zone and into the upstream zone. The drive controller is configured to drive the downstream zone and upstream zone simultaneously when detecting the oversized package.
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Final Office Action; U.S. Appl. No. 11/146,869; Final Office Action Mail Date Apr. 20, 2009; 12 pages.
Alston & Bird LLP
Deuble Mark A
Hytrol Conveyor Company, Inc.
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