Self-valving vacuum distribution for a belt-driven sheet conveyor
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United States of America Patent
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Nov 20, 2007
Grant Date -
Jul 21, 2005
app pub date -
Jan 19, 2004
filing date -
Jan 19, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A self-valving vacuum distribution system for a belt-driven sheet conveyor utilizes the sheets to automatically open vacuum control valves sequentially in a downstream direction as the sheet is carried on the belts. The system also automatically adjusts for varying sheet widths to automatically apply vacuum holding force only to the belt conveyor area covered by the sheet.
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