Patent ID: 6460441
Filing Date: 2002-10-08
Classification: B26D,B26F,Y10T

Abstract:
An on-demand exact registration form web perforating apparatus, comprising:means for moving a form web in a predetermined path in a first direction; first and second rotatable substantially continuous circumference perforator wheels mounted on substantially stationary axes spaced from each other along said predetermined path, and in alignment with each other along said path in said first direction; first and second anvil cylinders spaced from each other along said predetermined path, each comprising: an interrupted circumference including a raised circumferential portion and a depressed circumferential portion, and a movable axis about which each said cylinder rotates; means for rotating said anvil cylinders about said axes synchronously with said web moving means; and means for selectively moving each of said axes of said anvil cylinders toward and away from said perforator wheels from a first position in which said entire circumference of said anvil cylinder is spaced from said predetermined path and does not cooperate with a respective one of said perforator wheels, to a second position proximate said predetermined path in which said anvil cylinder circumference raised portion engages said web and cooperates with the respective one perforator wheel to effect perforation of said web substantially parallel to said first direction.