Conveyor induct system
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United States of America Patent
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-
Dec 15, 2009
Grant Date -
Apr 8, 2004
app pub date -
Oct 6, 2003
filing date -
May 11, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method and apparatus for controlling gaps between articles traveling on a conveyor system includes providing a plurality of tandem conveying surfaces defining a series of sequentially arranged conveying surface interfaces. At least one of the conveying surfaces associated with each of said conveying surface interfaces is an adjustable-speed conveying surface. At least one article sensor is provided adjacent at least one of the conveying surface interfaces. The article sensor provides information on positions of the articles. The speeds of the tandem conveying surfaces are controlled in a manner that establishes controlled gaps between articles, by identifying a controllable gap that can be adjusted between articles at a particular conveying surface interface and adjusting the controllable gap at the particular conveying surface interface. The control adjusts the controllable gap by adjusting the speed of the adjustable speed conveying surface associated with the particular conveying surface interface using a feedback controller. Gaps between articles are sequentially adjusted at the series of sequentially arranged conveying surface interfaces.
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