Weighing scales – Processes
Patent
1975-12-19
1977-07-19
Miller, Jr., George H.
Weighing scales
Processes
177 25, 177165, 177DIG3, 23515133, G01G 2322, G01G 1314
Patent
active
040363163
ABSTRACT:
Highly accurate and versatile computing scale which is particularly suitable for postal use. The platform of the scale is mounted on and supported by a single load cell in a system requiring no levers, pivots or other moving parts. Weight readings are averaged on a moving average basis, and in one preferred embodiment the scale has an accuracy on the order of 1/32 ounce over a range of 70 pounds. With no load on the scale, any drift is cancelled by increasing or decreasing the net weight reading in small increments during successive counting cycles to maintain an accurate zero reference. The scale includes a keyboard through which a postal clerk can enter information about the destination and type of service desired, and a zip code to postal zone converter is included for automatically determining the postal zone from the zip code. Digital displays indicate the weight and postage to both the clerk and customer. The scale can readily be interfaced with other machines such as postage meters and label/ticket printers so that output data from the scale is available to the other machines.
REFERENCES:
patent: 3770069 (1973-11-01), Loshbough
patent: 3860802 (1975-01-01), Knothe et al.
patent: 3869005 (1975-03-01), Williams, Jr. et al.
patent: 3986012 (1976-10-01), Loshbough et al.
Miller Jr. George H.
National Controls, Inc.
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