Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Sorting paper money
Patent
1996-05-20
1998-12-29
Nguyen, Tuan N.
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Sorting paper money
209604, 209900, 271263, 27126504, 25055927, B07C 508, B65H 712
Patent
active
058530894
ABSTRACT:
An apparatus for detecting the passage of superposed sheets, e.g. deposited currency notes, along a feed path includes a mechanism which has a pair of cooperating rollers (42,44) and which is arranged to generate an output voltage whose magnitude varies in response to the passage of an item (single or multiple sheet) between the rollers (42,44). Samples of this output voltage are taken during one complete revolution of one of the rollers (42,44). These samples are processed to generate a value representative of the cross-sectional area of said item. In order to take account of sheets of different sizes, a further value is generated representative of the dimension of said item parallel to its direction of feed. The value representing said cross-sectional area is divided by this further value in order to derive a value which represents the average thickness of said item and which enables a determination to be made as to whether said item is a single or multiple sheet.
REFERENCES:
patent: 4154437 (1979-05-01), Butcheck et al.
patent: 4579334 (1986-04-01), Durajczyk et al.
patent: 5384468 (1995-01-01), Milne et al.
Patent Abstracts of Japan, vol. 17, No. 527, (M-1484), 22 Sep. 1993 and JP 05 139572 A (OKI Electric Ind. Co. Ltd.), 8 Jun. 1993.
Patent Abstracts of Japan, vol. 95, No. 4, 31 May 1995, and JP 07 027555 A (Juki Corp.), 27 Jan. 1995.
NCR Corporation
Nguyen Tuan N.
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