G - Physics – 01 – G
Patent
G - Physics
01
G
354/28, 265/6
G01G 19/42 (2006.01) G07D 9/04 (2006.01)
Patent
CA 1207903
WEIGHING APPARATUS AND METHOD ABSTRACT OF THE DISCLOSURE An electronic weighing apparatus and method is dis- closed which enables the counting of an unknown quantity of items or samples such as currency, coupons, coins or similar items of a nominally uniform weight. The apparatus includes an electronic scale which provides a signal representative of the weight of an unknown quantity of items, a microprocessor which stores a repre- sentative unit weight of the items being counted and calculates an item count, and a display for providing an output representing the running count or other value representative of the items being weighed. An accurate count of the items is obtained by placing items on or removing items from the scale in incremental groups such that the net weight of any incremental group of items must have a stable net weight equal to or below a predetermined threshold weight before the count is made. If any incremental group has a net weight which exceeds the threshold weight, items must be removed/added until the number of items in the group produces a net weight equal to or below the preset threshold and allows counting to continue. The apparatus automatically accumu- lates the total count made in a number of successive weighments by incrementing a memory device automatically when the scale weight reading returns to or below zero. The weighing apparatus may also be constructed to automatically sequence and count through a plurality of groups of different items to minimize operator intervention. The apparatus may additionally be con- structed and operated to produce automatic verification of prede- termined quantities of items without operator intervention.
448628
Gowling Lafleur Henderson Llp
K-Tron International Inc.
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