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US 5,182,722 AGranted
Apparatus for assessing the stiffness of a sheet
AssigneeNCR Corporation
InventorDavid A. Hain
Life of this patent
Estimating the term…
Abstract
The invention relates to an apparatus (2) for assessing the stiffness of a sheet (4), such as a currency note, by measuring the extent and rate of movement of the trailing edge of the sheet (4) away from a feed path for the sheet. Such movement is part of a straightening movement of the sheet (4) upon disengagement of the trailing edge from constraining means (34) when a leading portion of the sheet (4) is in a bent condition.
Claims11
An apparatus for assessing the stiffness of a sheet, comprising:
- conveying means for conveying said sheet along a feed path;
- bending means in said feed path for providing a curvature in said sheet;
- constraining means for constraining the trailing edge of said sheet to move along said feed path until said curvature has been imparted to at least a portion of said sheet and until said trailing edge has moved past a predetermined location along said feed path;
- sensing means arranged for detecting movement of said trailing edge away from said feed path after said trailing edge has moved past said predetermined location;
- and
- data processing means for assessing the stiffness of said sheet in response to the output of said sensing means.
3 more elements
Dependencies are inferred from the claim text.