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US3869005A
Expired / Lapsed
US
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Value computing scale
Assignee: Mettler Toledo International Inc
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Filing: 1974-04-17
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Granted: 1975-03-04
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Expires: 1994-04-17
Abstract
Abstract Improved apparatus for weighing and computing a value for articles. An integrated circuit microcomputer is supplied with the gross article weight from a scale and with price per unit weight data from a manual keyboard. Tare weight data may be entered either through the manual keyboard or automatically from the scale. The microcomputer computes a net weight and a value for each weighed article. The net weight, the price per unit weight and the value are indicated on a digital display and may be printed on a label. Filtering circuitry prevents jitter in the article weight supplied from the scale to the microcomputer and the display caused by small vibrations in the article or the scale.
Inventors
- 👤 Jr Roger B Williams
- 👤 Richard C Loshbough
- 👤 Edward G Pryor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:36
CPC Classifications
G; G01; G01G; G01G23/00; G01G23/14; G01G23/16; G01G19/00; G01G19/40; G01G19/413; G01G19/414; G01G19/415; G01G23/163; Y; Y10; Y10S; Y10S177/00; Y10S177/03
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
205 words
A weighing and computing scale comprising, in combination, integrated circuit microcomputing means including an arithmetic logic unit, a sequence controller and data registers, weighing scale means for generating gross weight data, data input means having a plurality of digit keys for sequentially entering data into said weighing and computing scale, buffer and memory means for receiving tare weight data and gross weight data from said scale means and price data from said digit keys on said data input means and functioning as an interface with said arithmetic logic unit, said buffer and memory means receiving and storing tare weight data selectively from said scale means and said digit keys on said data input means, the tare weight data, the gross weight data and the price data being related to each of a plurality of successive weighed articles, and digital display means for visually indicating the price data, computed net weight data and value data computed from such data, said sequence controller causing said arithmetic logic unit and registers to compute the net weight and the value of the weighed articles and controlling the supplying of such computed net weight and value And the price data through said buffer and memory means to said display means.
Claim 2
Dependent Claim
205 words
A weighing and computing scale comprising, in combination, integrated circuit microcomputing means including an arithmetic logic unit, a sequence controller and data registers, weighing scale means for generating gross weight data, data input means having a plurality of digit keys for sequentially entering data into said weighing and computing scale, buffer and memory means for receiving tare weight data and gross weight data from said scale means and price data from said digit keys on said data input means and functioning as an interface with said arithmetic logic unit, said buffer and memory means receiving and storing tare weight data selectively from said scale means and said digit keys on said data input means, the tare weight data, the gross weight data and the price data being related to each of a plurality of successive weighed articles, and digital display means for visually indicating the price data, computed net weight data and value data computed from such data, said sequence controller causing said arithmetic logic unit and registers to compute the net weight and the value of the weighed articles and controlling the supplying of such computed net weight and value And the price data through said buffer and memory means to said display means.
Claim 3
Dependent Claim
80 words
A weighing and computing scale, as set forth in claim 1, wherein said sequence controller includes means for causing said buffer and memory means to periodically scan said data input means for data, means for comparing data received from said data input means on successive scans, and means for causing said buffer and memory means to store price and tare weight data from said data input means only after such data is received on a predetermined number of successive scans.
Claim 4
Dependent Claim
117 words
A weighing and computing scale, as set forth in claim 1, wherein said data input means includes a tare key, and including timing means for measuring a predetermined time interval, means responsive to the closure of any of said digit keys for starting said timing means to measure such predetermined time interval, means responsive to the closure of said tare key for causing said buffer and memory means to store a tare weight, such stored tare weight comprising data received from said digit keys when said tare key is closed while said timing means is on and comprising weight data received from said scale means when said tare key is closed while said timing means is off.
Claim 5
Dependent Claim
42 words
A weighing and computing scale, as set forth in claim 1, and further including means for digitally filtering gross weight data from said weighing scale means to reduce jitter, and wherein the net weight is computed from the filtered gross weight data.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |