Perforation machine for manufacturing adjustable vent baffles

Cutting – With product handling means – Means to move – guide – or permit free fall or flight of product

Reexamination Certificate

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Details

C083S401000, C083S469000, C083S659000, C083S678000, C225S002000

Reexamination Certificate

active

08079293

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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patent: 1993-039124 (1993-02-01), None

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