Perforation machine for manufacturing adjustable vent baffles
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United States of America Patent
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Dec 20, 2011
Grant Date -
Feb 21, 2008
app pub date -
Aug 21, 2007
filing date -
Mar 29, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A perforating machine for perforating a plurality of perforation lines in a vent baffle sheet comprises a support table having two spaced apart openings, perforating wheels, two backstop wheels, and an endless feed belt having a plurality of protrusions. The perforating wheels and the two backstop wheels are positioned on opposite side of the support table. The perforating wheels engage with the two backstop wheels through the two spaced apart openings. The endless feed belt has an upper portion and a lower portion. The lower portion of the endless feed belt is positioned above the support table. The protrusions on the lower portion of the endless feed belt engage with side stiffeners of the vent baffle sheet to move the sheet through the perforating wheels.
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